Earlier this year I connected from LHR on a BA flight through DFW onto an AA flight. Despite being in J, arriving in DFW ahead of schedule, and allowing 2h25m for the scheduled transfer, I barely made it due to the ridiculous customs/security/baggage-recheck process at DFW whereby incoming international passengers have to collect their (through-tagged) bags, go through screening and then drop them off again. The queues were so bad they went all the way back into the baggage hall and wrapped around one of the baggage carousels. I have spoken to another person for whom the same thing (he arrived on the same flight on a different day) took 2h45m.

Unsurprisingly, I am transferring through a different airport (ORD) on my next trip. Am I going to have the same nightmare there?

The other really annoying thing is that I am entitled to expedited clearance through U.S. immigration but couldn't use it because they didnt have a "lane" system at DFW - just one insane queue.