Are you in South Bend? Sounds like you have Dish.
In South Bend itself Comcast does not carry the Chicago feeds. I assume that Berrien County gets them because of the Illinois residents with second residences along the lake shore. (How many Illinois plates in your neighborhood. )
One piece of good news: If you live within the Grade B coverage of the Chicago stations you will get them without blackouts (if satellite offers them).
LaPorte County Indiana viewers are in the Chicago DMA and don't currently get South Bend stations (even though cable must carry them). Currently they will need SuperDish if SB Significantly Viewed are added.
My first experience with cable in Michigan was in Sturgis and we could receive ALL the channels from Grand Rapids/Kalamazoo, South Bend, and Lansing areas on our local service (plus WKBD 50 Detroit and WGN 9 Chicago). New laws made that impossible to offer. People in the southern counties of the Grand Rapids/Kalamazoo DMA should also be able to get SB DMA channels (on a SuperDish).
Some cities east of SB offer both SB and Fort Wayne on cable. That won't happen on E* since SB is 105 and FW is 121 (unless the significant channels are mirrored on both satellites - which is possible.
Yes, we have a lot of Chicago people here during the summer. I just checked the FCC web site and looked at the contour maps for the network stations, PBS and WGN. They're all putting a grade B in here. Even WFLD on channel 32. Here's hoping. I've got 100 from their spot beam on Directv.
I'm sure there are a lot of people in Laporte County who live a lot closer to the South Bend towers than they do to the Chicago stations.