Although I appreciate the intention in your responding, you have done nothing to answer the question.
Can you, or can you not, practice the religion which V2, Benedict, and his V2 predecessors have taught and practiced? Will such get you to heaven?
No, actually your question was:
The gist of Our Lord's words is: If you listen to my representatives, you are listening to Me. Doing such, you will infallibly be on the right path.
How is it possible to say this about Benedict, his post-V2 predecessors, and the entire V2 Church, and its patently non-Catholic religion? If we followed the Benedict and his V2 religion most faithfully, would we not be on our way to perdition?
The answer is to to understand infallibility in the proper and true light, and to understand the word "obedience" in the true light, not as slavish zombie mentality, but as obedience where obedience is due... only for that which is right and good and true. I have heard since my childhood catechism days, that the Catholic church teaches that if someone tells you to do something wrong, it doesn't matter who it is, you don't listen. I don't recall it saying anything, though, about throwing the baby out with the bathwater, eg "if your parents say to do something wrong, from then on, totally disregard their authority and defy them in everything!" ... I don't recall that attitude in my Catholic instruction anywhere.
Now it's the pope. Well, is it shocking? Of course. Scandalous? Absolutely! But the fact of the matter is, the pope is, after all, still human. He is still capable of thinking and saying things that are bad. We as good Catholics are taught by our dear Mother Church not do do bad things, no matter who says them. However the Church never said such an incident is free license to overthrow the rightful and legitimate authority of that person, when they are acting within it's right and true capacities, such as when the pope says things that ARE Catholic, or gives orders we CAN follow.
That's the answer to the question you actually DID ask originally.
To answer your second question, since the "new religion" is something different from Catholicism, we are bound NOT to obey or follow it, absolutely. But where the head of the church acts within his rightful authority (teaching and ordering that which is right and good) then we must listen to him.
Once you disregard the wrong ideas on obedience and infallibility, the whole thing becomes quite simple. (The truth often has that effect.)
In this way, we can follow and respect the pope when he acts justly and rightly (telling only the truth, and commanding only that which is good), and not at all follow anything bad or false he may introduce.
Of course I'm sure you will probably just say "EHHH! Wrong answer!" and look for another, but... you asked, so I gave you a very reasonable and complete response to your questions. If you don't like them, well... I'm afraid I can't help you there.