I wouldn't say that Chelsea winning the conference cup is a big milestone achieved, because they're bigger than that competition and the competition is filled with third class clubs. However, I applaud them for winning the CWC tournament and that's is a great achievement for them. I hope to see Chelsea put in this superb performance in EPL and UCL next season.
I think it was a turning point for Chelsea to win the conference cup even though they were playing third rate teams. Because Chelsea had started to lose the success of their past and they were in a decline. This victory was a motivation and a starting point for them. After that they managed to reinforce their motivation with the victory against PSG. PSG were the hottest team of the season and the clear favorites for this match. Maresca won a tactical victory. With this victory, Chelsea became the surprise winner of the tournament and ended PSG's domination of the competition. This victory shows that Chelsea have made a serious leap towards the Premier League and Champions League in the new era.
At that time the Conference league was Chelsea's to lose because they were the biggest team in that very competition, it would have been a shame had it been they lost it. Chelsea's spot being taken from them and handed over to Manchester United was like a blessing in disguise to them. They might not have gone far in the Europa League let alone winning it but look at how things turned out for them that they won it to boost their minds ahead of things to come.