Again, ad the gedoilim are correct, you DON’T speak to Lubavitcher talmidei chachomim because they are michutz lamachaneh. This attitude of “ignore your gedolim and speak to ours” is kind of weird, especially since they are the ones veering off the 13 ikkarim not us. It’s up to them to recant the apikorsus and rejoin klal yisroel, not up to us to ignore our gedoilim and understand their apikorsus.
Atzmus sicha said you are allowed to daven to the Rebbe because he’s Hashem in a human body. So mima nafshach- either you agree with him and you’re an apikoires, or you argue on him which means you hold your rebbe was an apikoires, and what’s to defend?