If it makes you feel any better, I was going to suggest PC & URI with the caveat that they aren't in the same city . . . . . but close enough in this city-state and then, I too, remembered PC not in the ACC. However, NAD, you know I have a bunch of years on you and I did catch myself.
That was ADMB's explanation. I assume they had a scheduling hole, and either could sit out the date, or find an opponent. -------------------
For the icebreaker tournament that HC is hosting, the three teams coming to the Hart originally included Notre Dame. Notre Dame dropped post-COVID, and they had to get a special exemption to bring in Northeastern. Icebreakers can't include more than one opponent from the same conference. ADMB said in effect, 'Let's not kill kid ourselves. These teams are only playing at the Hart because they want the two extra games per season allowed under Icebreaker rules. They don't like HC's rink because the dimensions of the ice sheet are not to their liking.' (HC expanding the rink might change the ice sheet.)