bk, BANACEK was never a part of the Sunday Mystery Movie series with COLUMBO. MCCLOUD (as you said), MACMILLAN AND WIFE, and HEC RAMSEY were the other components.
BANACEK anchored its own group of Mystery Movies on Wednesday (and then switching to Tuesday). NBC tried lots of shows to pair with it, but other than BANACEK, none ever reallty caught on. Among those attempts were MADIGAN, COOL MILLION, THE SNOOP SISTERS, TENAFLY, and FARADAY & CO.