condys will typically eat clowns. Ours did, and then we got rid of it and got a carpet. Typically, any nem will host any clown, some never do, some take months, some take hours. Our percula clown took an immediate liking to the condy, which obviously ended in tragedy (my first purchase, petco had them in the same tank, and the manager said they were fine, then within days, the clown was dinner. Upon research, I found this is common) I've had tons of people say maroons will NOT host in a carpet; ours took less than a week, and she hasn't left the carpet since. We also previously had a pair of ocellaris misbars (which are supposed to be a natural host) and only one of them took to the nem, after about 3 months. So, FME, it's taken anywhere from immediate to a week to several months to never for the clown to host a nem. As well as them hosting what is not a natural host and opinions stating that it "will never happen".
Anyway, just give it time. 2 weeks isn't very long, my LFS said its not uncommon for it to be at least a month. Ive gotten quite some surprise when I say our maroon took less than a week to host in an unnatural host nem, but it happened.

good luck to you!