i didn't see a post on this, and for some reason I can't get the search to work. When using the y wing title, can you fire your main weapon and secondary turret at different targets? Or do they have to fire at the same target?

Wording is identical to Gunner on that respect.
Gunner does not need to be the same target.
Therefore, the BTL-A4 title doesn't need to attack the same target either.

Thanks

That's why the stressbot works so fine with it: you declare two separate attack so you can either double stress a single ship or stress two of them if you divide your shots.

Also if your first shot kills the first target you may still hit another enemy