DVR and X1 Router but just one coax box

I had Xfinity install a coax connection in my house - in just one location. However, I have both an Xfinity DVR and an X1 Wifi router that both require a coax connection. Is it possible to get those both hooked up with just the one coax plug? Or do I need to have Xfnity come back and install another coax connection. Help!