FAP. Ratio of operating hours DME/Airbag vice versa as normal and no overdriver

Servus together Normally, the operating hours of the airbag control unit are about 10% higher than those of the engine control unit (DME). I now have data from a hand switch that has no ignitions in the ranges 1-6. Furthermore, the ratio of operating hours DME:Airbag is vice versa than usual. The DME shows an operating hours number, which is 50% above the airbag hours number, a new airbag control unit was not installed. The average speed of the vehicle was orientie rt on the DME = 45 km/h, oriented towards the airbag control unit = 65 km/h. Can anyone explain why the airbag control unit shows much less hours than the motor control unit? That the Porsche has no overdriver despite hand-operated operation can be natural, but there will not be so often. History makes manipulation very unlikely. Thank you and greetings from Wolf