(Reuters) - A global pandemic and the challenge of figuring out the future of entertainment greeted Bob Chapek on Wednesday as he took over as Chief Executive Officer of Walt Disney Co .Is he up to the task?Investors were not convinced and sent Disney shares down 3.7% by the end of the day, but sell-side analysts largely endorsed the succession plan.Former colleagues said Chapek is well-cast in his new role, at least until former CEO Bob Iger's contract ends on Dec. 31, 2021. Until then, Iger..