The directions in that tutorial I gave you work perfectly. It seems to me that after you have tried tutorial after tutorial and still have problems, then it seems obvious that you aren't following them correctly. the fault can't always be the examples/tutorials.
If we fixed it for you then you learn nothing. This along with all aspects of configuration is part of being a Network Admin. You must know and learn it if you wish to admin a network. Honestly, linking 2 servers is the easiest task you'll face as a netadmin. Please believe me on that point, I've been a NetAdmin for a very very long time.
Try this. Use 1 port only. Listen block set to 6667 and 6667 only. No options, no clients only, no servers only, no ssl .. nothing. Then you connect with an irc client to your server on port 6667. If you can connect, so can services. Then link services.