Response:
"It was only after an extended silence that he spoke, in a tentative tone, "I suppose you guys recall I once briefly became a fresh-water sailor," which indicated we were destined, just before the tide began to recede, to learn about one of Marlow's unresolved encounters."
Clarification:
Flashback in literature signifies a moment when the story’s narrative shifts back to a previous point in time. This technique is commonly employed to illustrate past occurrences that provide significant background information.
In the provided excerpt, a flashback arises to remind the second character of his change in profession to a fresh-water sailor for a period before the twist of fate led them to hear about one of Marlow's ambiguous experiences.
Your question's response is "It was common knowledge, they claimed, that following King William's conquest, his Norman supporters, exhilarated by their notable victory, recognized no law other than their own immoral enjoyment, and not only robbed the vanquished Saxons of their lands and possessions but also dishonored the dignity of their wives and daughters with unchecked permissiveness."