Why is my camcorder creating 10:40 clips?
Most devices use memory formatted as FAT32, which gives you a 4GB file size limit, so a recording is broken up across multiple files. For Sony products, Catalyst Browse is normally the software used to re-combine the files:
https://www.sonycreativesoftware.com/catalystbrowse

Normally you would import the files off the card using that, then select the files together and right click/combine. It should make a continuous single file recording from the source files, with nothing missing.