Jose Alvarado grabs Wembanyama's leg given a common foul NOT upgraded to a flagrant on review

Wembanyama's foul on KAT gets upgraded to a flagrant 1

Jose Alvarado boxes out Victor Wembanyama

Jose Alvarado hits the jumper over Victor Wembanyama as KAT is fouled in the paint with replays

Victor Wembanyama grabs Jose Alvarado by the neck and tosses him

Victor Wembanyama grabs Jose Alvarado by the neck and tosses him

Was this a legal box out by Jose Alvarado prior to Victor Wembanyama grabbing and tossing him