I've analyzed Season 1, and here's what I have:
MOAT
Longest: The Silver Saddle Horn of Hannibal (2:35)
Shortest: The Star of Sultan Saladin (0:24)
Quickest Teams Across (0:20):
- Green Monkeys, Lawrence of Arabia's Headdress
STEPS OF KNOWLEDGE
Shortest (6 questions asked):
- The Star of Sultan Saladin
- Ponce de Leon and the Lost Fountain of Youth
- The Medal of Sir Edmund Hillary
Longest (11 questions asked):
- John Sutter and the Map to the Lost Gold Mine
- Lawrence of Arabia's Headdress
SILVER MONKEY
Shortest: Green Monkeys (Shawn), The Trojan Horseshoe (0:14)
Longest: Blue Barracudas (Jessica), The Lost Logbooks of Magellan (0:32)