Minecraft port forward wont connect

[Evan]

Your ISP will only see one router since the whole point of the router (the Linksys one) is share an internet connection. You just need to explain to them that you have a router set up in your home/business and that you want to manage it yourself. In order to do that you either need to have the log in information or you need to have all the connections forwarded for you.

You might have to talk to more than one technician to get the results you are looking for. The key here is patience. 
Evan