It ends in death

So this is sort of random but ok so in the mcu/aos we have two timelines, one where thanos snaps his fingers and kills half the universe but the earth physically survives and a timeline where the earth gets blown up by Talbot and I'm assuming Thanos doesn't snap (I'm thinking that he was on earth when it went boom and died along with the destruction of the infinity stones). So does that mean that somewhere in that second timeline Peter Parker, Stephen Strange, and Tony Stark are alive and hanging out with the remaining guardians, because if the New York battle has already happened then they are already off earth. What were they doing while humanity was having a shit time in the lighthouse. Just a thought.