If you're interested in streaming, here's PBS' "How to Watch PBS Without Cable" page:
https://help.pbs.org/support/solutions/articles/12000090583-...
And a direct link to American Buffalo:
https://help.pbs.org/support/solutions/articles/12000090583-...
And a direct link to American Buffalo:
As a result, they have no incentive or negative incentive to advertise that other stations carry their content.
Or did I misinterpret your point?