The game never lived up to its billing because Colman's were completely out-hurled by one of the most accomplished sides ever to represent the famed Ennis college.
Easy then to understand the spring in the step of team coach James O'Connor at the final whistle: "It was a performance that reflected the huge amount of work we've put in with this group of players," said the Clare inter-county star.
"This is the most talented team we've had in the school in years. We won the previous two U15 titles [White Cup] and all but one of the players are under age which was a big help to us." Flannan's were awesome in their application. Showing outstanding control on a splendidly prepared pitch, they used their greater physique to brush aside the tissue-like challenge of the defending champions, and there was only going to be one winner after Gerard Arthur found the net in the 10th minute.
While it was essentially a team performance, Flannan's did have a number of outstanding individuals Their entire full-back line of Ciaran O'Doherty, John Moloney and Seamus Hickey were majestic.
Outside them the powerful figure of James McInerney at centre back never put a foot wrong; midfielders Damien O'Halloran and Conor Neylon ruled the roost from start to finish while in attack, all but one forwards got on the scoresheet with Gerard Arthur and Colm Madden their top marksmen with 1-2 each.
This was a humiliating defeat for Colman's who were chasing their fourth title in five years. There was none of the passion one associates with them when they clash with their great rivals, and on the evidence of this performance, may well be heading into a Harty Cup valley period in coming years.
It would be hard to pick out any player who measured up to the challenge. They were blown away by a superbly coached side, several of whom must come into contention for Harty team places after this display.
Colman's won the toss and elected to play with the wind but Flannan's were quickly off the mark with a Gerard Arthur point before goals by Arthur and Colm Madden left them 2-8 to 0-1 in front at the break, the defending champions' only score coming from a free by Adrian Mannix in the fifth minute.
Completely on top in every sector of the field, Flannan's were content to pick off points at will throughout the second half and Colman's goal by substitute Rickie Fraher in the 55th minute was only a token score as the Ennis college ran out the easiest of winners.
Scorers for St. Flannan's: G. Arthur (0-1 free), C. Madden 1-2 each; C. Tierney 0-4; C. Ryan, D. O'Halloran 0-3 each; U. Colleran 0-2; C. Neylon, N. Killeen 0-1 each.
St. Colman's: R. Fraher 1-0; A. Mannix 0-2 (frees); K. Dineen 0-1 (free).
ST. FLANNAN'S: M. O'Halloran; C. O'Doherty, J. Moloney, S. Hickey; D. Ryan,
J. McInerney, G. Hannigan; D. O'Halloran, C. Neylon; N. Killeen, C. Madden, I. Colleran; C. Tierney, G. Arthur, C. Ryan.
Subs. P. Moloney for Killeen; F. O'Reilly for Madden; B. Long for Ryan; J. Nehlon for Arthur; S. O'Regan for O'Doherty.
ST. COLMAN'S: J. McCarthy; L. Forde, J. O'Sullivan, M. Barry; S. Walsh, K. Kearney, F. Ryan; K. Dineen, J. Barry; S. Cotter, P. Mahon, P. Lynch; A. Mannix, C. O'Connell, J. Sexton.
Subs. L. Sexton for M. Barry; L. McCarthy for J. Barry; E. Barry for C. O'Connell; D. O'Connell for L. Forde; R. Fraher for J. Sexton.
Referee: P. Coffey (Limerick).