Well since ownership of the Cubs includes 25% of CSN Chicago, I would imagine that would be the case.
If there is a big up take of csn games will that csn alt start to be used (the so far unused csn alt that is not no comcast Chicago land yet) not the csn + feed. and will there be 3 HD csn feeds at one time.
comcast Chicago land should be done with the analog crush by the end of year and may then CSN+ SD will stop needing to shut down cltv to show csn + on cable.
I think that that csn alt may of been needed if bulls and blackhawks stayed in a little longer.