But you keep talking about alternate timelines except our heroes only ever go back to one timeline. Literally every change in the past you make you will see in the future. Are you saying our ship just magically travels to the right alternate dimension each time? Timeline 1 was Lucca's mother being paralyzed so we fixed that with Timeline 2 and we'll go to Timeline 2 every time we visit 1000 AD from now on. Timeline 1 had the Sun Stone being useless so we made Timeline 3 where it was in the right place but now we only ever go to Timeline 3 in 2300 AD. Timeline 1 had the Mayor's family being jerks but by giving Spiced Jerky to the lady in 600 AD created Timeline 4 of 1000 AD whee the family is nice. Etc., etc..

Are you saying we just randomly happen to go to the exact right timeline each time? That doesn't make any sense. It doesn't match up with anything that has been talked aboutwith regards to the party's time traveling abilities.

Like I said, I think you're overthinking things. This game was written by several different people and it shows. The temporal mechanics are shaky at best and contradictory at worst.