Darling also had a similar injury in 2015 which everyone forgets about. He was fine and has hardly missed any games since (except for that ankle injury in 2018).Cavka was a serious foot injury though which are difficult and career threatening.
Chesser ankle injury must have been bad though to be out this long if it takes another six months to settle so be it .
There is a strong correlation with Darling having a longer term injury and us making the GF.