Most airlines don’t let you get off on these flights, it wastes time and costs them money

This is true. I just found out that TG’s LAX-NRT-BKK flight is operated in this manner. One of my infamous acquaintances flew to India recently on TG and apparantly at NRT, they were not allowed off the aircraft, as it was just a fuel stop. All these years, I was under the impression that Thai was even allowed to sell revenue tickets on the LAX-NRT portion, but it turns out that pax can’t get off there if they wanted to! I wonder if SQ is under this same criteria with their SIN-TPE-LAX and SIN-NRT-LAX flights, as well?