Router EIGRP in Cisco switches to alllow two sets of VLANs to talk.

So, currently I'm trying to get a connection from switch to switch through EIGRP to enable two external devices to talk. I tried to set it up and I got one adjacency (192.168.1.x) but the VLANs I advertised on the same EIGRP weren't able to talk? EIGRP was never truly explained to me and the explanations I've found are way too high level for my use case. From what I grasp, you create a "separate network" (192), give a port on each side an IP on that network, and advertise the separate network and all your vlans on that EIGRP. What's going over my head/ am I doing wrong?