I guess I'll be the different one here. My brother is ESFP and we do sometimes have deep conservations but they are more related to science, history, and human nature rather than philosophy or politics for example. They are usually in the form of exchanging ideas or I will ask him a question or he would do so.
He does space out when I my Ni goes into overdrive and I start linking different things together because maybe he can't follow me. On the other hand, I space out when he starts to talk about tiny little details about how things work (like car parts and how they work).