Too much alike?

Okay, so I have a boy and girl name picked out that I’m in love with, but I’d like to know peoples thoughts on if they sound too much the same? I know first, middle and last all have same first letter and flow but I’ve gone through so many names and these are the only ones I come back to. For a boy it’ll be Mason Bentley and for a girl Madison Brynnleigh. I know they sound a like even if ones a boy and ones a girl name, but is it really bad? Would love to hear your thoughts on whether they sound too much alike.