Nope, Devon began the Way of the Giant Pump before Levan.
After Denis, he started training more frequently but more submaximally. Here's him explaining the impact of the Denis match and speaking with the Russians afterwards had on his training: https://www.youtube.com/watch?v=CtoWnHcc8XY
His match with Levan you mean. Youve gotten Dennis C. And Levan S. confused in regards to the loss and recovery focused on one arm.
Nope, Devon began the Way of the Giant Pump before Levan.
After Denis, he started training more frequently but more submaximally. Here's him explaining the impact of the Denis match and speaking with the Russians afterwards had on his training: https://www.youtube.com/watch?v=CtoWnHcc8XY
Here's a video from 2020 explaining the GP method, two years after his match with Denis, but before the Levan match. https://www.youtube.com/watch?v=GG6PEOehzZU