No, he says that he was sent orders in the morning 'to retire to the suburb of Leipsig at the end of the high road to Dresden' and later, while defending the suburbs that one of Berthier's ADCs brought him an order to send troops to the assistance of Augereau and that is it as far as orders go, but that doesn't mean a lot except that I would have expected him to mention that he had been formally given command of a rearguard.
He does say that he 'desired' Poniatowski to attempt a cavalry charge to allow the infantry to fall back to the bridge and that suggests that he did not think Poniatowski was actually under his command. I wouldn't place a lot of weight on this though.
I've just checked with the letter he wrote to his daughter on the subject later but it doesn't add anything.
The general impression is just confusion.