Four Explorers, One Torch: Find the Fastest Bridge Crossing

What is the fastest time for all four explorers to cross? THE RULES Crossing times are 1, 3, 6 and 8 minutes. At most two cross at once; a pair uses the slower time. The torch must travel with every crossing, including returns. You have 12 seconds before the explanation. Pause if you want more thinking time. Did you solve it before the last tick? Share your answer and reasoning in the comments. Subscribe to Last Tick Logic for more puzzle challenges. #LogicPuzzle #BridgePuzzle #BrainTeaser