Depends. Connecticut is the most insane college basketball state in the country (and no, I didn't forget North Carolina). It started in the 50s with Hill House (24 state championships, the first of which was in 1924) in New Haven and has never abated. You can't be in two places at once (we're talking about actual attendance...not just watching on TV), so 99% of people, given a choice, will be at the basketball venue. If they can't get there, they will be watching on TV. I went to the NCAA first round at the Harford Civic Center (or whatever they call it now...it was the Civic Center then) back when Mike Jarvis was coaching BU (and Jeff Timberlake was the star point guard)...there were 17,000 UConn crazies and about 100 BU fans. I've seen UConn in other parts of the country...I lived in Connecticut for a brief time and EVERYWHERE you go there are posters, t-shirts, store coupons, deals; it's just ALL UConn basketball. And they will definitely be in the NCAAs because they're 22-8 and the #3 seed in the Big East. That tournament begins the same weekend as the Hockey East Finals at the Garden. I'm sure there are "hard core" UConn hockey fans, but I'd be greatly surprised if you see a large # of them there. Just my opinion...
Ya, I guess my scenario is in a vacuum. If you take hoops out of the equation I think they would bring a huge crowd to the Garden. Even with hoops in the picture I would be curious to see what they bring. I am assuming a lot of UConn alums in Boston area. If the men's hoops game is on Thursday or Friday afternoon, watch at a bar and hit the Garden. They will lose to BU anyway so won't matter.