maybe very slim chance i reckon, as above, there will be 300 internal people going for it and by law they have to advertise ‘outside’ 😉
my cousin works in the local council, he has tried to get me in there for the last 4 years, ive had countless interviews. he was actually told i beat many internal candidates hands down but they kept it internal.
sorry to be negative but that’s my view, it might be totally different where you are?
best of luck anyway!