Okay, the first time I watched I was so not sure what they meant by Janeway protocol at first but doing this in timeline order and having JUST finished Voyager .... It's a temporal rift. The Janeway protocol is a response on what to do when you are being pulled into a temporal situation. Given it's a rift, its likely using the deflector dish to close the rift.
And since the next situation was a basic avoid a small asteroid (i.e. change course), using Janeway protocol probably somehow created a temporal situation. But I really want to know WHAT it does precisely and how it killed the kids because .... Dang.



















