In 6:11-12, Hashem tells Moshe that he should go to Pharoah and tell him to send out My people from his land. Moshe responds that the Jews did not listen to me, so how will Pharoah listen to me, and I have [uncircumcised] blemished lips.
Then the Torah goess a bit off topic and describes some of the lineage of some of the fmailies of the tribes.
Then the Torah gets back on topic and repeats the last conversation between Hashem and Moshe and then moves on.
Rashi explains that the reaso why it repeats that last conversation is because that is the normal thing to do. After going off-topic, when getting back on-topic it first repeats the last item and then goes forward.
But what did the Torah repeat? In 6:29-30 Hashem said to Moshe to go speak to Pharoah, and Moshe said to Hashem how will Pharoah listen to me, as I have uncircumcised lips.
According to Rashi that it is repeating the last conversation, why did it leave out the part of Moshe comparing the Jews not listening to Pharoah potentially not listening? That was the basis for his assumption that Pharoah would not listen, so why leave that part out?
I was thinking that perhaps, while it was necessary in the actual conversation for Moshe to make his point by comparing it to the jews not listening, in essence that is really a complaint against the jews. Sure they were overworked, impatient, frustrated, and did not listen to him for good reason. No time for false hope. no energy to get worked up over aanother likely false start. etc. But the fact is it was a sort of complaint that the jews did not listen to him.
So, while it was necessary at the time for Moshe to say it, and therefore it got relayed in the Torah as part of the conversation, but the second time when it is just repeating to get back on topic, there is no longer a need to say that aspect of the ocnversation. The point was already made. No need to repeat a complaint against the Jews.