(answering on announce@ as my understanding is that this is acceptable and even recommended, or now)
Yes, that's correct.
I received an automated email from groups.io about discuss@: "Subgroup discuss@edk2.groups.io has been created". It states that discuss@ is a subgroup of devel@. Does that mean that all emails sent to discuss@ are automatically reflected to devel@ too?
No, it does not. I had to pick a "parent group", so I chose devel at the time.
Also, I think you got that email because you're a moderator. Sorry for the noise. Let me know if you're getting bombarded with emails as a moderator.
No, it's fine; I appreciate the insight the meta-emails give me.
(I'm trying to gauge whether I should subscribe to discuss@ in addition to my current devel@ subscription.)
For those who aren't really interested in general discussion, rest assured that I'll forward any emails that I feel warrant devel discussion to that mailing list.
Also, I've not seen any settings that allow automagic reflection, so it is up to us as a community if we feel that cross posting is wise. I think that most RFCs will want to cross post to the devel list, hence the note about that.