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I always viewed "hookah" as a surface air supply with an umbilical with only one hose, regardless of the air source. Add another element to the umbilical like communications, pneumofathometer, hot water, or CCTV and it becomes surface-supplied in commercial diving jargon.
I believe that hookah became part of the English-speaking diving lexicon because the port on early double hose regulators were called a Hookah connection.