Bernadotte failed to get to Dornburg when he was ordered to do so. And the order stated that if he was with Davout he was to march with him. That part of the order, which superseded the order to Dornburg because the situation had changed, was neglected and ignored by Bernadotte who refused to support Davout, one of the points being that Bernadotte refused to march behind Davout since he commanded I Corps and Davout III Corps.

Bernadotte played the marplot on 13-14 October 1806 and the evidence seems to point to deliberate disobedience of orders. Napoleon's 23 October letter certainly points that way.

Sincerely,
K