In "The Man with Two Beards" by G. K. Chesterton, the author was describing a situation where John & Devine were going to Carver with John's new car:
"I say," burst in the irrepressible John, before Devine could offer any polite greeting, "I’ve brought her round to give you a little run. You see if she isn’t better than a ‘Thunderbolt.’"
Mr Carver’s mouth set into a smile that may have been meant to be gracious, but looked rather grim. "I’m afraid I shall be too busy for pleasure this evening," he said.
"How doth the little busy bee," observed Devine, equally enigmatically. "Your bees must be very busy if they keep you at it all night. I was wondering if——"
"Well," demanded Carver, with a certain cool defiance.
"Well, they say we should make hay while the sun shines," said Devine. "Perhaps you make honey while the moon shines."
Does "demand" here mean "interrupt"? If not, what does it mean in this context, as he just said "Well"? and does "equally enigmatically" mean "also grim"? As I found that "enigmatic" means "obscure"?