Ann: Becoming a substantial holder from CBA, page-4

Yes, they are both part of the CBA group.

On rereading there are actually two Colonial entities that purchased shares. Also I didn't mention Avanteos Investments as they only purchased 22k shares.

What I was highlighting is that CBA equities borrowed a signifcant amount of the shares. I am not sure why one CBA entity would presumably prepare to short while the other went long?

This information is from Annexure B of the announcement.