When you cast any of the summon spells and the creature has spell casting, how do you use the once per day or week spells? Does this limit apply across multiple summon spells of the same creature?

Basically, if the creature has a once per week spell like commune, am I able to summon it twice in a day and use the spell both times?

When you cast any of the summon spells and the creature summoned has spell casting, how often can you make use of the summoned creature's once per day or week spells? Does this daily or weekly limit apply across multiple summons of the same type of creature?

Basically, if the creature has a once per week spell, am I able to summon that type of creature twice in a day and use the spell both times?