All depends on how you view things I guess, we Chelsea fans are used to instant success when a manager comes in, so most will struggle to wait 2 years but in artetas defence you could see the improvement and the direction they were heading, secondly I don't think they hired him because he "worked with pep" I think that's most twitter click bait shit personally. And lastly kompany had Burnley playing shit hot in the championship problem is they didn't have the players to do that in the pl, he had his style and he stuck too it, I think how well Burnley played in a league with an equally set of talent players was a big reason in why he also got the job, big teams now seem to be going down the young and up and coming manager route, so the next 5 years in football is going to be dominated by new faces in management I feel.