True
That's not exactly how I would describe it. Physicality in itself in these contexts is something like "another level of Se" or sensing that is added on to the basic level of Se involved in fighting. That's why LIIs are often decent at mental sparring or argumentation like the example of L.So it seems like physical fighting takes and .
Si has to do with maintaining space / resources while Se has to do with increasing / expanding them, which is how it would generally come into play in fighting - you have to be careful not to overextend yourself. I guess you could say physical combat has a somewhat greater level of this, but only if you're talking about literal hand to hand combat, and it's still dwarfed by the Se.
Ah! I knew I was forgetting one...