I'm a software developer. We (our CEO, our project manager and me) currently had a two day project meeting with a client (their CEO, their project manager and two power users).
On the second day the project managers and CEOs had to discuss some organizational stuff, where the user and I were not needed. So they proposed that we do some hands-on testing to improve usability details.
They thought that the meeting of the managers would take about one and a half hours, but in the end took three hours.
The hands-on was really productive and helpful for the user and me for about two hours, but then we ran out of topics. So we three were sitting in front of my PC for an hour, mostly in uncomfortable silence. We started talking about things like holidays and so on.I did not limit myself to any fixed schedule or topic. We covered issues in the current test version of the product, all questions I had regarding the next phase and additional features for current and upcoming parts. There were no topics left I could think of. But as neither me nor them are big small-talkers this felt really awkward.
How could I've handled the situation, what do you do in similar situations?