Barnet conceded a last-gasp winner at Bristol Rovers on Tuesday evening to see their lead at the Conference summit cut to six points.
The Gas left it late to beat the Bees at The Memorial Stadium, with Angelo Balanta snatching all three points with an injury-time winner.
Matty Taylor had put the home side ahead after four minutes as Rovers started brightly. However Luisma Villa levelled when he planted a stunning free-kick beyond Gas goalkeeper Steve Mildenhall.
And the points looked set to be shared until Balanta struck at the death to deny the Bees a share of the spoils.
You can watch the highlights below:
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