Having just watched that slomo, the immediate reaction of the other 9 players in shot, 3 Albion and 6 Burnley says a lot me. The 3 Albion players all raise both arms in appeal whilst not one Burnley player does anything other than try to play on and pretend nothing untoward has happened......
I think the slo-mo clip says it all, although (I count) 7 of their players are in the shot when the challenge is made, not one of them makes any appeal to the ref, all three Albion players do so immediately. I'm really glad we've put in an appeal.