It is possible it could be up to 48hours + 12hours before an engineer looks at the aircraft again.
The engineer will typically do the check on a nightshift and the MXI work package will be closed immediately prior to the first flight the next day. I'm sure most tech crew have been delayed due to maintenix issues of a morning and know what it's all about.
The clock starts counting for the next check from the moment the MXI package is closed, usually in the morning, not from when the check was actually carried out the night before.
Just some more food for thought for the tech crew. Think about how many support vehicles approach the aircraft between nightshift and prior to first flight - and where do you see 99% of all aircraft fuselage damage.