«حَتَّى لِلْغَايَةِ كُلِّيًّا»
Hatta expresses an endpoint in a general sense.
A ghaya is the boundary or outcome toward which the preceding expression is directed. The earlier act, however, does not always continue literally in time up to that boundary: the construction may instead convey cause and consequence.
Translating hatta simply as “until” therefore does not complete the interpretation. One must ask whether the earlier action can continue and whether the following event can actually serve as its endpoint.