When you hear the same question multiple times in a short period, chances are it's a fairly common one, so I'll respond.
The question: Can a GIPS(R) (Global Investment Performance Standards) compliant firm show two (or more) benchmarks in a GIPS presentation?
The answer: Yes! However, if you're going to do this you need to identify which is the "primary" benchmark.
Some firms like to show the components of a blended benchmark, alongside the blend: that's fine! Others like to show something like the consumer price index; that's fine, too.
Just make sure you identify the primary; arguably the others appear for "reference" purposes.