I think CBSN is part of their app, but you have to have to log in with a television package to be able to watch it.
The sooner the packages die off, the better. I’m sick of paying for YTTV just to get ESPN. Sports are the only thing we watch on YTTV. Sitcom shows on the networks are awful now and the only channel with shows that I want to watch is FX, which I get with the Hulu subscription.
Sling Orange the Sports Extra is $57/month compared to $83 for YTTV if you want to save some money and still get all the ESPN channels.