Hmmm, That is interesting and I see where you're going with this but look at it differently for just a minute. I think Torque converter could = symptom not "problem"

Do all the routine stuff like check the AT fluid per the manual (truck and tranny must be warmed up, parked on level ground, engine running and in park..etc.) if it’s not immediately oblivious take it back in and have it looked at..it’s still under warranty right?

-Good Luck,
Saturday