-Which of you listens, or pretends to listen, to my long tangents about obscure arcane knowledge?
Bhelram may be listening while he is doing other stuff, but he doesn't even pretend to understand anything about it.
-Which of you tells me about your own passions?
Probably not, or rather only if he is asked about it, for example the smithing and maintaining of his gear.
-Which of you have I saved in battle?
Probably once or twice. Bhelrams rage makes him focus on his next target, sometimes to the point of tunnel vision.
-Which of you have saved me in battle?
One time, when a dire wolf was getting ready to jump at you, Bhelram did the same and tackled the wolf away, proceeding to puncture it with multiple spikes on his shoulder before finishing it with a clean cut of his Axe.
-Which of you gives me piggyback rides?
Most of the time, Bhelram either wears or works on his spiked armor, so not much time for giving PBRs (Yes, that acronym definitely exists somewhere. Probably. Possibly. Maybe.)
-Which of you has little patience for my aforementioned long tangents?
Bhelram uses them more as pleasant background noise, since he, as said above, doen't understand a thing.
-Which of you is guarded when you speak to me?
Bhelram may be a rather silent fellow (outside of battle that is), but he is not guarded. If asked, he will answer most questions.
-Which of you underestimates my abilities due to my size?
Being maybe a foot taller than you, Bhelram won't underestimate you for your size.
-Which of you underestimates my intelligence due to my childishness?
Not really, but intelligence is not something Bhelram can really estimate anyways. He thinks you are smart, because of your hourlong tangents.
-Which of you won't give me a piggyback ride despite the fact it would be really fun?
1: Spikes 2: Size difference not that big.
If you'd ask, and he didn't wear his armor for some reason, he'd probably still do it.