RTW ? Transfer at point of origin
 

Looking to do a RTW ex BKK and as first sector want to fly BKK-MFM (Macau), then I'd like to do MFM-SIN - but this requires a transit in BKK.

(It's actually a Macau airlines TG codeshare, but seems to be OK)

Generally this would be impossible, but I note that Thailand is exempted from the rule regarding only 1 int'l in or out of the country of origin and the * booking tool seems to allow it...thoughts ?

Thanks