Was George Miller inspired by Sidney Portier's "The Long Ships" (1964) in scene Immortan Joe sacrifices a Warboy?

When Immortan Joe sacrifices a Warboy to impress Dementus was it inspired by a similar scene in Sidney Portier's The Long Boats? "The Long Boats" (1964) is currently free to watch on Youtube so here is a link with a time stamp of the very scene I'm referencing. Do you think a Young George Miller saw this an was inspired to put a similar scene in his film 60 years later? Here is movie with timestamp. https://youtu.be/mgS2TgbI7_g?t=5611