Glynn's third, also with a drag flick, stretched Auckland's lead before fellow Black Stick striker Krystal Forgesson added two to complete the comprehensive win.
Midlands collected bronze for the second successive year with their 2-1 win in the wet over Northland after Anna Thorpe had given the northerners their 1-0 halftime lead.
Gemma Flynn got Midlands back to 1-1 early in the second half with a shot which deflected off Northland legs. Jol McGarvey scored from close range to put Midlands ahead but a great save from goalkeeper Sally Rutherford in the dying minutes denied Northland the chance of taking it to extra time.
The Midlands men joined their women as bronze medallists in a high-scoring affair against Capital who had set the early pace in going through the opening rounds unbeaten to emerge as Challenge Shield favourites.
After racing to 3-0, Capital seemed set for victory but Midlands hit back to level at 3-3 and then take a 4-3 halftime lead as Nick Ross scored his second. Joel Baker levelled at 4-4 before Andy Hayward struck twice to take Midlands 6-4 clear.
Capital were not done with and goal-scoring stars Matt L'Hullier and Stephen Jenness scored to level at 6-6 and send the match to extra time.
The first period, with teams down to nine players, failed to find a winner but in the second period, with just seven players from each team, import Rob Reckers scored his second of the match to give Midlands their nail-biting 7-6 triumph.