The following events will occur if you complete your research session during maintenance.
1. If you start your research session before maintenance, you can complete the session as normal.
2. If you start your research session during maintenance, you can complete the session as normal (as long as there is only one set of data).
3. If there are two or more sets of data, your research session will conclude automatically under one joint session. This includes snack time. (Poké Biscuits will automatically be given to your selected Pokémon).