Firstly, there are no appeals on judgment plays. I'm not saying a team couldn't try, but there's no basis by rule to support it.So if there is no team control at that point... the officials should have went to the AP arrow? did they? if the arrow was pointing to tech, there might be basis for an appeal.
If they blew the whistle while the try was in flight, the basket would have counted if successful. If not successful, they would have determined how much time elapsed between the inbound and the shot being unsuccessful, which, according to this crew's correct assessment of 0.5, would have resulted in time expiring. No time remaining for an alternate possession.