Sub not in game for disqualified player

[Nevadaref]

Originally Posted by just another ref

Is your take on this different in the case of the disqualification, or do you advocate a T every time subs come in and you count 6 on the floor as you prepare to put the ball in play?

It is different in the case of a disqualification because of the official notification and 20-second replacement interval which have just taken place. There shouldn't be any confusion about this individual's right to be on the court at this point. During a substitution process or following a time-out confusion about which five should be out there is certainly possible.