king knight vs king knight. Not a draw?

why is this game not an intimidate draw at the end.
en.lichess.org/uKxGAhEr/black#163

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For example 62...Kg1 63 Ne6 Nh3 64 Kg3 Ng1 65 Nf4 Nf3 66 Nd3 Ng1 67 Nf2#

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