Can clips be selected and deleted from playback? Can the deleted clip be recovered, how?

Sorry for the grammar errors. Someone threw my parcel, and that clip was missing on the playback. The recording showed the delivery guy arriving (~5 seconds), then it cuts to the delivery guy leaving (~7 seconds clip). There was around 1 minute between the time he arrived and left, but there was no recording of that 1 minute. The total time when the delivery guy is infront our house is just around 1 min and 13 seconds.  It's just too odd to be a coincidence that the clip where someone threw my parcel was missing, and the recording only showed him arriving then the video cuts to him leaving. There's nothing that blocked the view to not suddenly record any motions. There was a delivery 5 minutes before mine, and the recording was complete. The other motion-detected recordings are also complete. The only missing clip is the record when someone threw my parcel.

Based on my previous experience, I know someone who will throw it and delete the video. The position of the C200 is difficult to reach though, so I don't think he got the SD card to delete the clip (he studies Information Technology or IT).