they are extremely forgiving on allowing time outs “before” the shot clock runs out
the stadium scoreboard is by rule the official time, but that’s not the whole matter because an on-field official, the ref??, overrules often to reset, the scoreboard should reflect the official time but doesn’t always
the TV clock is often off a few seconds, you come back from commercials with it adjusted frequently
the TV clock is often wrong on resetting and starting the countdown
a few times a month the TV shot clock goes off before the 2 minute warning, but the ref has told the QB the official time allows the QB to not snap the ball to get to the warning
not a science.... basketball is the worst