Technical fouls to start the game

[Sharpshooternes]

Can someone help me with this case play? 6.4.1 SITUATION A:

Twelve minutes before the game is scheduled to start, team member A1 dunks the ball and is charged with a technical foul. B1 is discovered to be wearing an illegal jersey, as the players prepare for the start of the game.

RULING: The game will be started by awarding Team B two free throws for A1's technical foul. Team A will then be given two free throws and the ball for a *division-line throw-in for B1's infraction. When the thrower of Team A has the ball for the throw-in, they have control for purposes of establishing the procedure and the arrow is immediately set toward B's basket. Team B will have the first *opportunity for an alternating-possession throw-in. (4-3)

Why does one penalty trump the other? Does one type of technical foul take precedence over the other? In this case play is it just order of discovery that is penalized? thanks