"Now that I've actually had the chance to be in it, it's definitely a different feeling stepping back, now I know what it's like," he told the Beyond The Grid podcast. "I don't have to imagine anymore, to actually experience it has obviously been amazing and amazing for my career, but it's a little bit tough to step back.
"I think what's potentially helped through each scenario is, yes, it's extremely frustrating, but I've been able to sit there and understand at the time of this decision, why this makes sense. That goes back to De Vries last year.
"At that point, we were having a shocking F2 season and we turned it around at the end, but it was all too late. I had a really good end to the season, I had good testing in F1, but by then the decision was made, so that's frustrating."