If he has no objection when the girl talk with him, can this be consider as his consent?

If the father is completely consenting to this matter, not only that the matter was only discussed with him and no objection was shown. Sometimes an issue is discussed with another and they show no disagreement however if I say I want to do this, then they may object.

The marriage is valid on the basis the father gives consent even if a general consent is taken from him such that for example I say I want to do this. In this case it is enough