Board Thread:Game Discussions/@comment-71.63.92.220-20131225220653/@comment-15683865-20131227035738

Yes it is possible, but be warned that it is an EXTREMELY LOW chance. If you do fuse 2 legendaries there is a plethora of 4 star and 3 star armors that you can possibly get. But yes Leviathan + Vesture could yield Maelstrom but to get your hopes up. If those 2 armors are still useful to you, I advise keeping them until they become useless for you.