1. "Iron out technicial detail": both sides are trying to iron out technical detail--according treasury official:
2. "It is fruitufl"--"we've got more to do" according to commerce secretary
3. Chinese deletegae were seen leaving the house for a break before 5:30 PM, and talk will reassume around 8:00 PM---around 3:00 Pm east time in US. they are really engaged. (i guess that both side need time to get final approval)
My feeling is that the outcome is positive. highly likely that they will "iron out" the details.
Of course, the devil is in the detail, it is still possible that the talk may break down over detail.
However, I give it a low probability.