Ask HN: Interviews during startup acquisition process

I am an early employee (not founder) and the technical lead for a startup with more than a dozen people. We have been invited to the Bay Area by a major internet company.

The company signaled a clear intention to make an acquisition offer following meetings and interviews.

As a member of the technical team, what should I expect from these interviews? Will I be implementing binary search on a whiteboard? Asked about architecture decisions we made last year? Carefully questioned about my willingness to work within a much larger organization?

Any experience would help, thanks!