egg donation for Surrogacy question

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Okay It must have been the massive thunder storm yesterday, first really big and beautiful one of the year, but I've got a real life question to ask about surrogacy/IVf. In the context of a lesbian couple could each donate eggs that can be implanted into same body either by IVF or through surrogacy so there is a chance if two take hold they could have two different biological mums.?
I.E. two woman donate eggs, both fertilized by same sperm donor then both clusters of eggs get implanted into another woman.
Any ideas/facts. Thanks in advance for any help