NHL has what another 2 weeks ?
Yes thats about a week longer than normal, the NHL usually wraps up in the 2nd week of April I think for the regular season, however the playoffs would start right after that and are always on the local RSN for the 1 and I think 2nd round as well, which is also using the RSN's for the feeds, so no bandwidth is really freed up till after the NHL goes off the RSN's. (C.I. is also fed from the local rsn's)
Over past few year some RSN's needed like 3 feeds that for years only had 2 feeds. 1 full and 1 part time that in the NBA and NHL play offs needed to have 2 part time feeds.