duncan and hammer coral compatability

[lhscouchmonster]

i recently rearranged my tank while trying to catch a coral beauty that was doing too much coral nipping. my hammer is now very close to my duncan. both are 10+ head colonies. should i move them farther apart or are they OK touching? It looks like they were fine earlier today but i noticed they both backed off eachother a bit.

they have been like this for three days and nobody looks too hurt right now.