From the AV Herald
Incident: Canada A320 at San Francisco on Jul 7th 2017, lined up with taxiway for landing
AC-759 had already overflown taxiway C by about 0.25nm when ATC instructed the aircraft to go around. 4 aircraft were on taxiway C at the time of the occurrence. It is estimated that AC-759 overflew the first two aircraft by 100 feet, the third by about 200 feet and the last by 300 feet. The closest lateral proximity between AC-759 and one of the aircraft on taxiway C was 29 feet.
I am sorry if there are people on this forum who are saying that the AC crew had everything under control and that there was no significant danger. Three seconds more reaction time and the first plane's tail gets clipped, and the rest happens like dominos. If the unidentified guy on the tapes hadn't alerted the tower that AC was over the taxiway, there would have been a disaster. This is way too close a call to dismiss.