We should remember with VAR that it can only get involved if a penalty, red card decision or goal has been given/not given incorrectly or in cases of mistaken identity.
Thus, for instance, VAR could not recommend yellow cards for simulation (even if it believed it to be the case) for any of the penalty appeals today.
I thought the Alli one was a handball, even based on the PL's standards, and was surprised it wasn't given.
I thought the Son challenge for the Gomes injury was only a yellow card challenge. A difficult situation of course and I wonder if VAR stayed out of it because of the circumstances - I would normally have expected them to intervene and think there's every chance Spurs will successfully appeal.