Instagram multiple accounts post - what happens to comments and likes

So I just came to know that you can post to multiple Instagram accounts at the same time.

I was wondering what happens when people react to that post. Do all comments and likes show up in both accounts, or does Instagram only show the comments and likes depending on what account you are following.

To illustrate:

Let's say a person P has two accounts A1 and A2.On A1, they have a follower F1, and on A2 they have a follower F2. So basically F1 follows P on A1 and F2 follows P on A2.

Now when P posts something on both A1 and A2, what would happen in the following cases:

1. Will P see all comments and likes from followers on A1 AND A2 aggregated?
2. Will F1 only see the comments and likes from other followers on A1, or, will they see comments and likes from followers on both A1 and A2?