#dyadposting

they can communicate telepathically from across the galaxy. Neither of them is very proficient at this as they only found out about it way too late, when they were very much enemies and Obi-Wan made himself undetectable (and from the Rako Hardeen arc we know that when he does this not even Anakin can recognize him);

they share feelings, memories and pain through the Force as if they're experiencing them together, as one, at the same time;

during their duel on Mustafar, Palpatine felt that Anakin was in danger, despite them not being nearly done fighting. This could be due to Palpatine sensing the dyad bond being severed, and any Force bond severed is dangerous as it can create a wound in the Force. Palpatine could have been worried about Anakin becoming a wound (tho i personally think that Obi-Wan is more likely to have become a wound instead);

upon realizing Rey and Ben are a dyad, Palpatine says that the dyad bond was "unseen for generations". It technically has been generations since Obi-Wan and Anakin, plus 'unseen' doesnt meant 'non-existent'. Palpatine might simply not have noticed, as "A Force dyad, binding two separate beings together, was not an easily discernible phenomenon." After all he only realizes Rey and Ben are a dyad when they fight him directly and as a team and he accidentally siphons their life force, which is a situation he has most definately never found himself in with Obi-Wan and Anakin;

remember the dyad bond being created over time? Palpatine tried (unsuccessfully) to form a dyad bond with Anakin, meaning that not only he knew about the prophecy of the dyad, but he sought to realize it in himself and, likely, getting rid of Anakin in order to avoid the prophecy of the Chosen One being realized instead. Anakin/Vader at that point had surrendered himself to Palpatine entirely, so there would be no reason for the bond not to be created. Unless, of course, Anakin already shared that connection with someone else;

them being a dyad would explain why Anakin had to die in order to bring balance to the Force, despite having already killed Palpatine: he needed to reunite with Obi-Wan so the dyad could be one again. Rey doesn't need to die because Ben transfered his life force to her. This is also why Ben doesn't appear as a Force ghost: other than lacking the training, he lives on in Rey;

on that note, Obi-Wan and Anakin being a dyad would also explain how Anakin was able to learn how to become a Force-ghost despite having no training at all (Sith cant become Force ghosts so Palpatine certainly didnt teach him). and even in legends, its Obi-Wan who reaches out to him in the space between death and beyond and teaches him the way.

An argument against the Obi-Wan/Anakin dyad is the "Rey and Ben are unique and nobody can do the things they can do" argument. Which is true, they are absolutely unique and we have never seen any character, in either legends or canon, do the things they can do, but I wouldn't consider it a strong argument. Nearly every Force bond is different and unique (some Jedi could create bonds with other Force users, some could create bonds with anyone, some could create bonds with animals, others could only create bonds with their master/apprentice) and the strength of those bonds varies depending on the people who share them.

We only have a single example of what a dyad looks like, in canon, and that is simply not enough to rule out the possibility of other characters having shared that bond, especially knowing how difficult it is to recognize!

Obi-Wan and Anakin could not transfer objects through the Force or touch each other across light-years, but I would argue they never needed to, as they were so inseparable that they were concieved as a single entity by the entire galaxy:

(Revenge of the Sith - Matthew Stover)

And to further confirm the depth of their bond, here is Yoda sensing** the effect of Obi-Wan's death on Anakin all the way to Dagobah:

(There is Another - Gary D. Schmidt, from From A Certain Point of View)

**He sensed Obi-Wan and Anakin clashing against each other as well, describing the fight as follows: "Then the two vibrations met, and their pulses fought across the back of the Force."

Making Obi-Wan and Anakin a dyad would also make the Rey and Ben dyad make more sense: Anakin was created by the Force itself to be the Chosen One as a response to Plagueis trying to create the perfect dark side user and Sith warrior -> Anakin then forming a dyad bond with Obi-Wan, a steadfast light side user through and through -> that bond being severed causing the dark side to take over the light -> Anakin's twin children being equally capable of redeeming him (perhaps another dyad, or something akin to it since they could also do some of the things obikin/reylo can do) -> the dyad being reunited with Anakin's death -> Palpatine is actually not dead so balance needs to be brought back yet again -> Anakin's grandson forms a dyad bond with Palpantine's granddaughter (finalizing what Palpatine had failed to do with Anakin) -> the dyad is fully realized when Ben dies to bring Rey back to life.

This would make Anakin retain the most important role in the story as the Chosen One and the 'patriarch' (word used loosely) of the dyad lineage.

And last, but most certainly not least, Obi-Wan and Anakin lead the Open Circle Fleet during the Clone Wars. The Open Circle emblem, specifically, represented the two of them and the power of their bond: "The heraldic emblem consisted of a yellow circle that was formed by two separate semi-circle arcs. One arc represented Kenobi, the other, Skywalker. The image signified that while they were both two independent halves, together they formed a single entity."