Subaru “B Service”?

Hey folks, yesterday I took the ‘15 XT (33.000 kms) to Subaru for their “B” service as I’m sticking to dealership servicing until initial 5 yr warranty runs out. My question is this: although Subaru’s maintainance guides list B service as taking 2.3 hours, they had only had the car for 1.25 hours when they called me to say it was done. I had already changed the engine/cabin air filters myself but that only takes like two minutes so no big time saver there. The major difference between A and B service is brake servicing. I am not at all familiar with this process, but is it possible to properly service brakes (and change oil + other B service items) in 1.25 hours? Wondering if shortcuts were taken or maybe they just gave the brakes the eye-test and nothing else.