My husband and I have been hanging out with this married couple, and they're always arguing. What can we do?

My husband and I have worked with this couple occasionally and we're good friends with each of them. They've been married a little over a year now, and they're always arguing over the stupidest things. We like hanging out with them but lately it's getting annoying listening to them argue (about nothing, for example: recently they got into big argument about whether "I Love Lucy" or "Mash" was watched by more people). They're not being too abusive or anything, just bickering. They're usually a lot of fun but recently we can't hang out with them without them bickering and arguing. Can I/should I say anything? They've said my husband and I are a great couple so I don't think we're unqualified to give advice, I'm just worried about it being unwanted. Should we say anything, should we hang out with them less often, or should we be suckers and just watch them argue?