You are inquiring specifically for the SPL?
SPL TMG is rolling 24-months: When you sit into the cockpit, within the last 24 months you shall have 12 hours PIC / 6 hrs non dual + 12 landings + one hour training flight w/ EASA FI (NO!!! CRI / doesn't have to be german). The training flight will be signed in your logbook with the FIs Hans-Otto and his license number. So will be a revalidation by an examiner FE if you choose to replace experience by that. No further paperwork. Training flight done in a SEP for PPL will be accredited.
PPL is what you wrote:
Within 12 months prior to bi annual revalidation:
12 hours in
12 landings
1 training hour (at any time within 12 months pre expiry) with FI or CRI, TMG and SEP exchangeable, only one needed.
All replaceable with a FE or CRE check ride (your choice of FE/CRE), but only within three months prior to revalidation.
Once it's expired, examination flight with FE assigned by the local authority uppon application.
So if you want to have both current the trick is not to do the training flight with a CRI and have it signed in the logbook not only the paperwork for revalidation. Otherwise if your PPL is valid your SPL should be as well.
Last edited by BDAttitude; 7th Feb 2020 at 18:32.