Neville broke up the pair when they confronted each other in the dying seconds of Villa's comfortable 2-0 win over the Toffees - a result which lifted them to eighth spot in the Barclays Premier League.
He said: "Villa had just won 2-0 so I couldn't understand why they were arguing really. I was in the same hotel as Marlon on holiday in the summer and got to know him quite well. I just pulled him away.
"It is one of those situations where Marlon is desperate to score and so is the other lad (Agbonlahor) and you then have a bit of a go at each other.
"It is the sort of thing which happens every day of the week. It is just one of those things."