After studying the Love hexagons (thanks to Kathy for stopping the slideshow), I guess-timated some dimensions and made a test.
Yipe. That’s a big block:
Big, I tell ya! This guess is 18″ from flat side to flat side.
Turns out this was a test block for the sake of some brain exercise because, good news, the pattern will be available for free at Amy Butler’s site by the end of next week.