Watford manager Gianfranco Zola was left fuming on the final whistle at referee Philip Gibbs, after the Hornets' play-off charge was pegged back by Burnley at Turf Moor.
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Zola was disappointed with Gibbs' decision to award a 28th-minute penalty to Burnley, which Charlie Austin scored to level from the spot after Dean Marney was fouled.
Earlier, a well-struck volley from Nathaniel Chalobah gave the Hornets the lead but Zola was left to reflect on two dropped points in a 1-1 draw.
Zola said: "I was getting angry towards the referee, in fact a few of us were.
"But that was nothing to do with it (the decision to substitute Chalobah) - he had a dead leg and had to come off. I wasn't very pleased with the penalty, it was unclear and I'll have to see it again.
"I wasn't angry as such but I wasn't pleased that is for sure. Angry is too strong a word but I was disappointed.
"It is not going to be easy for anyone to get points here because Burnley are a tough side to play against.
"I would like to be in the play-off zone at the end of season. The table is short and we need to keep working and improving so I am not too concerned.
"We didn't create as many chances as we usually do and the passing wasn't fluid but that is to be addressed during the week."
Watford took the lead on 11 minutes, when, after a succession of corners, Chalobah struck a sweet volley from 15 yards out through a crowd of players and past Lee Grant.
Burnley came close to levelling when David Edgar failed to get on the end of Ross Wallace's free kick in the 27th minute.
But from the following corner, the home side were awarded a penalty after Joel Ekstrand's foul on Marney, and Austin sent Watford goalkeeper Manuel Almunia the wrong way for his 22nd goal of the season.
Grant came to the rescue twice inside 30 seconds for Burnley in the 51st minute when he saved with his feet and chest from Troy Deeney.
Austin nearly made it 23 goals, but his diving header from Kieran Trippier's cross on the hour was stopped on the line by Almunia.
Burnley had a penalty appeals rejected in the 74th minute after Marney's shot was deflected into Marco Cassetti's hand, before Ekstrand's superbly-struck effort from 25 yards struck the bar, with Grant foiling Deeney from the follow-up.
Almunia came to the rescue in the final seconds with a fine tip over from substitute Sam Vokes' header.
"We're not hard done by because that is the reality of football," said Burnley manager Sean Dyche.
"You can dominate games and create as many chances as we did and still not win and that was the obvious view of the game.
"I was pleased with the reaction because I thought it was terrific. From that moment onwards I felt we dominated and the chances we created, I've lost count.
"It was a penalty, I've seen it again and I was disappointed not to have another one in the second half because it looks like a clear handball and I don't know how it wasn't given.
"That aside, I am more interested in the performance, which I thought was very good again today.
"The reality is though that we have to turn those performances and chances into clinical moments which change games. We so nearly did but we found a keeper on top form."