Do Menacing Glare and Rattling Presence stack?

[Golurkcanfly]

I just started society play with an Envoy, but I noticed something that I couldn't quite figure out.

The Menacing Glare expertise talent allows you to demoralize a group of enemies all at once, but the shaken condition lasts for one round (even if the DC was exceeded by 5). Rattling Presence allows you to forgo adding the Expertise die to increase the duration of the shaken condition.

I don't see any reason why they wouldn't work together, since the Rattling Presence isn't an increase from exceeding the DC, but I could be wrong.

[Hithesius]

They don't stack because they both require forgoing the bonus from the expertise die. They probably would stack if you could somehow combine them, but you presently cannot do so.

[Golurkcanfly]

Didn't catch that part of Menacing Glare. Thanks.

EDIT: This just makes me wish I could trade Expertise Talents for Improvisations, since all the options I actually find interesting are Improvisations.