It looks like autosteer was on until the last minute because it's pretty solid as far as steering goes. The car isn't accelerating or decelerating when you compare it to your surroundings. Unless you were steering. Another possibility, without autopilot cancelling out was if you had your foot slightly on the accelerator. This would have overridden any braking from TACC.



Also, 2019.5.15 and 2019.8.3 are pretty buggy, so who knows.

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