I would say either until after that or until then but not *until after then. Until after the inquiry (that), until after the time the inquiry is completed (then).
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Grammar GeekI would say either until after that or until then but not *until after then.Are you talking about this particular context, or in general? i.e. Can I use "until after that" instead of "until afte
Until after the inquiry (that), until after the time the inquiry is completed (then).