Originally Posted by
HONcircle
Incorrect.
TG FCL access in BKK is when departing on TG F and *A F, or arriving in BKK in TG F, and connecting to final destination within 24H on any *A flight in same ticket.
Weird, where did you get that information? If true it would be interesting.
But TG has no arrival lounge, so the reason you can use the deaprture TG FCL is an "exception" for pax arriving in TG F and continuing on TG (in any class).
Of course if you depart from BKK in F on another airline with an arrangement with TG, then you can use TG F lounge as departure lounge.