So I was pleasantly surprised that I had no trouble gaining admission into the BA T5 arrivals lounge after flying into T3 on AA. It does make me wonder if AA would enforce what’s posted on its website, which indicates that the AA T3 arrivals lounge is accessible to BA passengers flying into T3, a distinction BA does not make on its website with respect to T5.
Here’s my run for anyone interested. One thing I really enjoyed is that as I started out along Western Perimeter Road, an EY A380, clearly EY12 destined for AUH where I lived 2017-2020, took off directly over my head.
https://connect.garmin.com/modern/activity/13597797799