I assume most of Northern Ohio will show all Cleveland games regardless of what is on elsewhere.
In the market of a team if they are at home and sold out no game can be shown opposite of that game. period. No grey area.
If its not blacked out then they can substitute another game but again no game can be shown opposite it.
Thats why this past Sunday even though CBS had the DH Minneapolis only got the late game (Vikes at home). Mankato and Duluth can show the early game and both did.
Doesnt matter what the opposite game is if the team is at home they cannot show a game opposite. Thats why San Fran was the ONLY market that couldn't show Tebow/Brady and didnt have another game on CBS to show (unlike Cleveland that had the Browns on at 4:00). San Fran was at home on Fox.
Cleveland game is on CBS...AFC road team games are on CBS
Detroit game is on CBS (San Diego being an AFC team and the road team CBS carries it).
Since CBS Toledo took the Browns game as the early game they cannot show any other game.
CBS Detroit is forced to take the Lions game (since it sold out). And following rules above the 4:00 Fox game cannot be shown.
That doesnt matter unless a team claims the market as a secondary market and Detroit only claims Lansing and Grand Rapids. Secondary markets are forced to show the road games of that team.
The Toledo market runs all the way to Sandusky so thats why the Browns games are shown in Toledo...even though Detroit may be closer the CBS would rather show the Browns over the Lions.
Here is a good read on how the markets work and what you'd get
the506.com - NFL map index 2011
scroll down the page on it