The protagonist is thinking about his task. I moved ahead. It would be good to finish this job and ...................... In that I was jogging, I first thought that the vibrations were my own. I was disabused of this notion when small pebbles began to roll aimlessly about the ground before me. ["Trumps of Doom" of The Great Book of Amber by Roger Zelazny] I'd like to know if "moment" is omitted after "that." Thank you in advance for your help.