Originally Posted by
Majuki
I did the reverse on Friday TBIT -> T4. Including reprinting the AA boarding pass for Precheck, I was in the Flagship Lounge within about 30 minutes of landing. (This was with with checked suitcases and dropping them off/repacking them for the bag drop.)
This was a case of landing in T4 (from Shanghai) and having the T4 immigrations closed and using the secured walk into TBIT. Didn't time the TBIT-back-to-T4 walk + security, but I don't think it could have been a full 20 minutes... security was pretty quiet, and out of a 90 minute connection had time for a shower and some cranberry juice and pretzels up at the AC.