Replays were not 100% conclusive but did appear to suggest the ball had crossed the line and Everton had a right to feel aggrieved.
Villa played on and seconds later were 2-1 ahead, leaving Everton dependent on the 83rd-minute penalty awarded after Jean Makoun was adjudged to have fouled Phil Jagielka.
Goalscorer Baines said: "It was probably quite a tough call for the linesman given the speed we were attacking at and the speed the ball was travelling.
"It may have just crossed the line but I don't know how conclusive the replays have been.
"In the few seconds afterwards we were looking around hoping the referee was going to signal and give a goal and they went up the other end to add to the disappointment and get one themselves."
Source: PA
Source: PA