Can you use segments within segments?

Can you use segments within segments?

I'm pretty certain this isn't possible but I'm asking to check!

Is it possible to use segments within segments e.g. you use an "Industry" segment to select leads working in Construction then, within that segment, you apply a second segment to select leads with a "Job Role" of Purchasing?

Failing that, is it possible to use Bulk Segments to generate segments on two fields e.g. every possible combination of the contents of the "Industry" and "Job Role" fields?

I can't see a way to do either but I'm double-checking.

Many thanks

Steve