Patrick Dangerfield-inspired Geelong have advanced to the AFL season decider, overcoming the loss of star utility Tom Stewart to concussion in a gutsy 30-point preliminary final win over arch-rivals Hawthorn.

The Cats were forced to sub out Stewart before quarter-time but recovered to erase a 21-point deficit in their 17.13 (115) to 13.7 (85) victory in front of 99,597 fans at the MCG on Friday night.

Chris Scott's side will meet the winners of Saturday's Collingwood-Brisbane clash in next week's grand final.

But Stewart will miss the decider under concussion protocols in what Scott described as "shattering" circumstances.

And there is concern over key defender Jack Henry, who played through pain with a left ankle injury sustained in the first quarter.

Dangerfield produced one of the

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