Manners. When all else fails you, you can always count on good manners to point you in the right direction.

"My thanks, sir, it is most kind of you to say so," for instance, was much more likely the right thing to say than, say, screaming, or saying nothing at all and screaming on the inside. No matter how sensible either of those options seemed at the time. Was that a problem back when gods first made themselves known to mortals? Perhaps Olympus had to wait until they’d developed passable etiquette before they introduced themselves. Unless they were wiling to accept terror as a form of awe? Maybe it was the style at the time. And if it wasn’t for manners, he might’ve put voice to any of that, when it had absolutely nothing to do with the unknown god sitting before him! Ha ha ha ha! Ha! Ha! Ha! Yes, he [i]has[/i] been quiet for too long, thank you for noticing. “I had been wondering, since Jil first brought it up, who was responsible for the development of bar fights. It did not seem to fall neatly under any divine umbrella, but it was much too uniform across too many disconnected cultures to be completely up to chance.”

In absence of...well, in absence of any cue or clue alike, he chances to press his hands together, palm to palm, and decline his head in respect. Not [i]every[/i] god shared the gesture, but more than enough to make it a guess as reasonable as it was inoffensive. "It is an honor to meet you, Sir Mars." Mars. Mars. His name was Mars. He knew that, and he shouldn't have. Truth of the divine neither from study nor experience. Which was, perhaps, how this sort of thing worked in the aforementioned introductions between gods and mortals? That might make a lot of _Prelude_ by Someone-Or-Other a bit, ah, problematic. And he stuffs the rest of that thought in a box with many of its cousins, to be chewed on…later. Much later. "Indeed, sir, I and some of my companions will soon attempt to cross the Rift into the land of the living. Your consideration of my services is a great honor, though I must admit ignorance to your domain, along with nearly all that awaits us beyond the Rift.” 

Another bow of his fluffy head. Deferential. Humble. Ruthlessly noncommittal. All the proper ingredients for a safe return of the conversational initiative. Under the circumstances. Manners assures him that no god would dare risk the wrath of another, and harm a guest under their hospitality. Myth whispers that harm was a rather flexible term.