Can I use an HB610 1pk with my existing BE550 Pro as an extender for a second level? I'm using Xfinity. I assumed I could use either devices as the router and the other as an extender / mesh. The HB610 seems to have higher bandwidth and might work better as a router connected to the modem? Frankly, aside from some features, I'm not sure what's the difference and why a different Aginet product is needed if they're both EasyMesh.