Hypo clear is superfluous on film. Film is not a fibrous base that requires an extensive wash. The gelatin emulsion as thin enough to get away with a very brief wash, just like RC paper.
Fixer is also definitely not known formally as 'hypo'. It's in fact an archaic term and was distinctly informal (as an abbreviation of 'hyposulfate of sodium') even when it was in regular use. It's also a misnomer for Ilford Rapid Fixer since that's evidently not 'hyposulfate of sodium'; the term 'hypo' was not originally associated with ammonium thiosulfate. The distinction is not just linguistic, but also practically relevant, since ammonium salts generally have much better mobility in solution and thus wash out more easily.
The use of HCA is not necessary on film. Even so, if HCA would do anything in this case, it would be a workaround for a deeper rooted problem that shouldn't exist in the first place.