Dallas continued to pose the Bees' biggest threat after the break, volleying narrowly over the top before having a powerful stoppage-time shot blocked.
Daniele Galloppa grabbed the equaliser in stoppage time with a powerful snap shot from the edge of the area to close the game at 3-3.
Marcello Trotta scored the only goal in first-half stoppage time with a powerful low drive from 20 yards.
And the last chance of the game fell to Heffernan in stoppage time as his powerful strike from 18 yards was pushed away by the flying Nielsen to protect the Steelmen's lead.
The on-loan striker fired past Seagulls goalkeeper Tomasz Kuszczak in the first minute of stoppage-time following a powerful surge into the 18-yard box.
Marc Pugh shot over the bar for the Cherries before the visitors deservedly took the lead in first-half stoppage time as Angella's powerful header flew past Camp.
England became increasingly nervous in the closing stages and were finally undone four minutes into stoppage time, when Smiljkovic drilled in a powerful 18-yard shot.
On what became a pulsating occasion, Matt Smith scored the winner with a powerful header from Tom Cairney's outswinging corner in first-half stoppage time.
Midfielder Song Chong Gug finally found the range in the second minute of stoppage time, eluding Turkey's defenders for a powerful shot from the right side that slipped into the net past Rustu's outstretched hands.
Bernie Vince and Jack Viney did the heavy lifting at the stoppages for the Demons, while Jesse Hogan was a powerful presence inside 50 with three goals in the first quarter.
And Chelsea were indebted to Courtois again in stoppage-time when he pushed over Ibrahimovic's powerful downward header.
