The disparity in the experience and quality of the squads resulted in a total mismatch that was over well before the scheduled close despite only 10 overs on the first day.
Cricket Ireland directed that the red-ball compeition be a best v best for the Under 23 players in the region which meant that the Knights had many regular senior interprovincial players, while Munster's line-up featured a very inexperienced one.
Irish international Cade Carmichael top-scored with 146 from 142 balls (19 fours, 3 sixes) as he and Sam Topping put on an opening stand of 246, only ended by a run-out.
Warriors opener Topping, back on home soil also made a century, hitting 14 boundaries in his unbeaten 107 as the Knights declared on 276 for 1.
What followed was a slaughter of the innocents as Munster were completely dismantled twice in quick succession - their two innings lasting a total of 44 overs.
Carson McCullough (4-6), Cian Robertson (3-5) and Tom Ford (3-5) did the damage with Munster bowled out for 46 in 27.3 overs.
They did manage 71 in their second effort thanks to Zubair Hassan Khan's 26, but only lasted 16.3 overs. The CSNI duo of Harry Dyer (6-38) and James West (3-29) the destroyers-in-chief in the innings and 159-run win.
In truth, this match was a waste of time, effort and money for all concerned.
The match at Oak Hill was more of a contest, but again with more than a half of the first day lost to the rain, a draw was always going to be the likely outcome.
The Warriors skipper Harry Zimmermann top-scored with 58 as they made 234 for 9 in the first innings, with runs too for Freddie Ogilby (37), Gavin Roulston (36), Cameron Melly (33) and Ryan Nolan (26*). Clontarf's John McNally (4-35) and Ethan Marshall (2-46) were the pick of the bowlers.
Leinster's reply was a solid one after the early wicket of Chris De Freitas. Philippe Le Roux top-scored with 81 (12 fours, 2 sixes), while there were also half centuries for Rob O'Brien (65) and Gavin Hoey (53), as well as 42 apiece for Sulieman Safi and Seamus Lynch.
Zimmermann picked up two wickets and was in the runs again making an unbeaten 32 in the second innings as it petered out into a draw. Scott Macbeth (26*) also chipped in, while there were two wickets for Mark Tonge before the teams shook hands on the draw.
The sides are back in action next week.