Talking to married cosplay couple

Hi! I am acquainted with a married cosplay couple who are poly. I’ve had a few convos with them outside of cosplay, but I’ve been finding it hard to find a time to talk to them outside of cons. I know they’re busy during cons and don’t want to flirt while they’re in cosplay so I don’t push any boundaries. I’m socially inept and want to figure out a game plan to get to know them better to see if we could potentially be a good fit. Any advice appreciated, thanks!