Double sessions and AT

so if i do 2 sessions back to back, does AT allow for such, or will it just treat the 2 as totally separate items. for example does a Vo2 session at 5.0 followed by a 3.0 endurance carry any extra progression or adaption?

They are separate. You don’t get extra credit for doing a level 1 endurance session in a fatigued state (for example).