Originally Posted by
mauiUAflyer
Our flight was canceled, and the nice ladies in the GF lounge rebooked me on BA, in biz. Had to exit T7, and walk down to TBIT, reclear TSA, and head for the BA lounge. Nice flight. Upon return, I requested and received original routing credit.
So no worries, I would say...
You can walk airside from T7-T6-T5-T4-TBIT.