Originally Posted by
Boraxo
It is possible to transfer MR points directly to someone else's RR account as long as the recipient has the same last name. MR only requires the RR destination account #
While Marriott's T&Cs state that points can only be transfered between spouse accounts, in practice (and this has been confirmed by
Marriott Concierge)one can combine points from any other account.
So with that, it should be possible to transfer the points from your account to anyone's you choose and then they can initiate the Marriott to Southwest transfer.