Actually, it's the bussing at T1 which is the most eye-popping. In particular the fact that domestic arrivals are bussed *outside* the secure zone. I haven't had a domestic bussing at T1 (only LGWN but that's another story), but does that happen often? If so, I would be very, very narked, especially if I had a short connection, or had bought duty free liquids or something. Yes, you need to get through security to get to T3, but the FCC is far more convenient and involves less walking

Hang on a sec... Why didn't they check your bags through? If it's the same ticket, they check through even if they can't print boarding passes. If it's not, then the policy on BD as with BA and many other airlines is very clear - no checking. And if your bags weren't checked through, then you would have had to exit the secure area anyway...

As for the sandwiches thing, tbh, I'm not normally that fussy, but offering to uniformed crew first is a serious no-no, and, if I remembered, I would name and shame the flight attendant in any complaint letter. IMHO, it should also be encumbent on the deadheading crew to point out that there are farepaying customers who need to be served first, so they would just as surely be at fault