If they can both get to the Frozen Four, BC and PC would face each other in the semifinal on April 10.
Here is the full bracket:
http://www.ncaa.com/interactive-brac...ehockey-men/d1
Looking at the Regional match-ups and the road to the Frozen Four:
This season, Providence played Quinnipiac once in Quinnipiac and played to a 3-3 tie. They played Vermont twice, both games were back-to-back in Vermont, and Providence won both games. The Friars did not play Union this season.
Boston College did not play Denver or Minnesota State this season. They played a home-and-home series with Mass-Lowell, winning the game in Boston, and tying the game in Lowell.
Colgate played Ferris State three times this season, winning 2 and losing 1. Both of their wins were shutouts. They did not play any games against North Dakota or Wisconsin.