The LO digest and REA digest are incredibly similar in that every module you have within the digests that you send, your realtor has as well. When you co-sponsor a realtor, you are co-branded on every mortgage/refinance module on the realtor's digest that they send out.
If you utilize Video Manager and the awesome videos that AoH provides, there are 2 of your videos that will appear on the agent's digests. Those 2 videos are Intro to refinancing (on the 30-year fixed option only) and Pre-qualification. With that said, the realtor can choose to remove your 2 videos from their digests.
If you have any shared clients, meaning you and your co-sponsored agent have the same client email address and property address loaded in your respective accounts, it will then become a "Shared Client". You can check out your shared clients by going to "Homeowner" tab > "Clients" tab > "Shared Clients" tab. All shared clients will still only receive 1 monthly digest but it will be coming from the Realtor, not you!