Amongst the many comments he received following his career update, New York journalist Nick Byrant decided to express his thoughts and send on his best wishes.
Sharing Mark’s post onto his 38,000 followers, he added: “One of our great writers and big thinkers. Sorry to see you go Mark,” which resulted in Emily wading in on the conversation.
“This x 100. Gutted,” she told her 406,000 followers.
The BBC host then asked her colleague, seemingly light-heartedly: “How could you?”