In EP3 depending on your ending choice of EP2 you have 2 different starts, if you Trust Jack he moves the platform that Rhys and Fiona are standing on up and then you can shoot Vasquez's arm off or just shoot August through the robots. Fiona and Sasha come in the garage and settle things, they go to Old Haven and then activate the building. If you go to Hollow Point as Rhys, instead of a Felix homemade grenade to run away from Athena as Fiona, Loaderbot comes and throws Athena away, Sasha and Fiona then go to Scooter's garage with Loaderbot and they find Scooter arguing with Rhys and Vaughn because they told him they own the caravan, also because they're Hyperion. (which leads to Rhys and Vaughn being captured and Fiona and Sasha going to Old Haven after they got captured, trying to save Vaughn and Rhys from behind but fail anyway).

Also you get to activate the Gortys building before Fiona and Sasha come with you. Also, you can go to Old Haven or Hollow Point which changes how things play in the Fiona and Sasha parts, if you went to Old Haven, during the Fiona and Sasha chase with Athena instead of Loaderbot saving them from her, Fiona will use one of Felix's home made grenades (it was like a flashbang I think) then run away, she'll go to Scooter's garage and then you meet Janey in Scooter's garage which makes Athena go back normal and you can tell Janey that Athena was chasing you (which changes dialogue if you did in EP3). In EP2, you can change how your caravan looks and it carries till EP4 so far.

Here's a wall of text about the branches/choices I wrote: Not in a plot changing way, but think about it like branches, A to C or B to C? And they're different.

So, a lot of people keep saying 'choices don't matter, TT sucks'.

Tales from the borderlands trainer