Part of the "showdown" series. In alphabetical order. Might add a few more later as they come to mind.

Only counting feature length works; I'm going off of the (somewhat arbitrary) 50+ minutes rubric. The one exception might be "Not Reconciled" at 50-odd minutes, but Straub/Huillet's first "conventional length" feature, "The Chronicle of Anna Magdalena Bach", would also count here.