Kenny Feeney snatched a dramatic draw for GMIT with the last puck of the game from 90 yards in a fired-up contest at Dangan.
GMIT, who will host the concluding stages of the competition early next month, kept their faint hopes of being involved alive, while NUIG's prospects also hang in the balance after a second draw.
Joseph Cooney – who had salvaged a draw for NUIG with two late points against Mary Immaculate – carried on where he left off last week, taking just 27 seconds to blast home a goal.
GMIT replied through Conor O'Donnell and Shane Lawless goals, and they trailed by 1-7 to 2-3 at the break, having played against the wind.
GMIT seized the initiative on the resumption with a flurry of points, but NUIG hit back with a goal from Niall Burke, and even when Cormac Diviney was dismissed, Burke landed a brace of points as they led by two in the dying seconds.
But Tadgh Haran's free reduced the gap and Feeney stepped up at the death.
SCORERS – NUIG: N Burke 1-10 (7f, 1 '65'), J Cooney 1-1, B Lane, D Burke 0-1 each. GMIT: T Haran 0-7 (6f, 1 '65'), C O'Donnell, S Lawless 1-1 each, J Kilkenny 0-2, A Lynch, K Feeney 0-1 each.
NUIG – D Tuohy; D Magner, K Moynihan, C Diviney; S McCormack, B Flaherty, E Glynn; L Markham, D Burke; D Higgins, N Burke, B Lane; J Cooney, K Downes, G Donoghue. Sub: B Daly for Magner (30).
GMIT – J Keane; B Hunt, S Coughlan, G O'Halloran; M Donoghue, P Hooban, B Mulrooney; G Brennan, K Feeney; K Lane, A Lynch, J Kilkenny; C O'Donnell, S Lawless, T Haran. Sub: D Cooney for Lane (57).
REF – C McAllister (Cork)