Mike Curtis and Joe Staton continue to expand the world of Dick Tracy world into other comic strip universes. They've established that Little Orphan Annie exists in Tracy's world, as does Gasoline Alley, Terry and the Pirates, Popeye, Fast Track, and more.
They've even created an alternative version of Fearless Fosdick for Tracy's world in the form of Straightedge Trueworthy (created byVera Alldid). Now Al Capp's original character parody joins the Tracy universe in an innovative way, beginning with this sequence from June 28. 2016.
It's important to remember that Fearless Fosdick was always a fictional character. In Al Capp's strip L'il Abner, Fearless Fosdick was a comic strip that L'il Abner read. The comic within a comic was a send-up of Dick Tracy, carrying the tropes of Chester Gould's strip to the extreme.
And in the sequence started above, Fosdick remains a fictional character. In this case a dream creation of Dick Tracy. So where does that leave L'il Abner and the denizens of Dogpatch in the Tracyverse? I'm not sure -- but I'm going to keep reading to find out.