Thanks for replying;
I follow your reasoniing, no problem. One could, if need be, off course think of TV1 -> calling X & TV2 -> calling Y.But that is not the issue.
I would just possibly install next to each other for testing and learning purposes.
What struck me though, referring to Kaffeine, is that once you install Kaffeine AFTER MythtTV, the TV section totally disappears from Kaffeine...
And as far as 'easy' testing is concerned, it would be rather easy to have Kaffeine co-function next to MythTV - Using it from within KDE of course, not from within LMCE.