Wife & daughter flew on UA from PHX to BKK via SFO and SIN on Sunday. Due to all the construction at SFO, UA lost some of their normal gates, so they had to park at TA which required them to go through security to get to TG. They boarded their flight to SIN on time, and then they sat there at the gate for 1.5 hrs due to a technical issue, and then because one runway is closed it took them forever to taxi and take off. They only had a 2 hr layover scheduled at SIN, and they were on the last flight to BKK that day, but fortunately there were agents waiting for them to de-plane and escort them from T2 to T1 to catch their Thai Airways flight to BKK. Of course, their baggage didn't make it, but they got it delivered the next day.