In the tournament of power we've seen Freezer giving energy to Goku to restore Goku's power, after he run out of energy when he used for the first time incomplete Ultra Instinct
Then in Dragon Ball Z we've seen how 17 gave energy to Goku for him to create a Genki Dama
Since 17 has infinite energy, why cant he give energy to Goku to restore his energy just like Freezer did before?