Didn't watch it all. But I think my main comment would be the senior assistant. Did not remain calm, went straight in (with the buzzer flag in danger - I bet the referee was worried!), did not manage the dugouts which should have been his main priority as they got pretty irate. Then when sending off he was getting very animated and vocal, copying what the referee was doing. No need and looked quite embarrassing - speak to the referee, then let him deal with everything, no need for further participation on his part (i.e. telling the players to leave the FOP etc...)
Overall, very busy indeed.