Who owns the Freehold plus multiple Land Reg entries

Hi there, My partner and I are considering purchasing a maisonette property, which has another gff underneath. This is the only two properties in the building.  The Land Registry shows both a Leasehold and a Freehold of the 'First Floor Flat'. It also shows a Leasehold and Freehold of the 'Top Flat'. Then lastly there is a Leasehold and Freehold of the Bottom Flat. I have included a copy of a Title Register and Title Plan, although not sure whether this is from the 'Top Flat' or 'First Floor Flat' as this was sent by the Estate Agents. The Property Register states freehold land, but then the Title Absolute states those in the bottom flat as the owners. It also states the price of the upper flat including land in said title and also in AV252607 (which I am assuming is the bottom flat, although I do not have the titles etc to that flat to be sure). If this is a cross lease, in which bottom flat owns freehold to top flat, and top flat owns freehold to bottom flat, why does it state in the title register of top flat (AV252616) that it is freehold land? We would really like to understand what is happening with the property before putting in any offers. Hoping you can help clarify if possible. Much appreciated. Thank you.

Freddie - it's not unusual to have maisonette's such as this where the freehold and leaseholds are cross-matched so to speak.
So one maisonette is owned leasehold by it's owner who then also owns the freehold of the other maisonette. And vice versa
The key from your perspective is to ask the seller/estate agent to confirm what it is that is being sold, namely the leasehold maisonette and adjoining freehold for example
 

Thank you Adam, that's what I thought.  Just wanted to check there was nothing else to it.  Appreciate the quick response and answer.  Thanks again.