Missing first sector on a domestic to International Flight

[Flyer 777]

Travelling International on Tuesday on Jetstar with first sector on domestic Jetstar flight on the one booking with my brother. (We have seperate bookings as he is travelling from interstate. Issue is he has flown Virgin early to visit first then go together, which means he won’t be flying the domestic first sector, will this mean his second international sector is cancelled? He has chatted online to Jetstar and they have said it will be fine does this sound correct as I haven’t flown Jetstar?
Just don’t want to get to the airport on Tuesday to find his international sector is cancelled!!

 

[MELso]

There is a high likelihood that missing the first sector will be treated as a no show and result in the rest of the ticket being cancelled. If the Jetstar leg is no longer needed, it should be cancelled before departure.

 

[markis10]

Jetstar do point to point bookings that are not linked, as Jetstar have mentioned it will be fine

 

[Flyer 777]

There is a high likelihood that missing the first sector will be treated as a no show and result in the rest of the ticket being cancelled. If the Jetstar leg is no longer needed, it should be cancelled before departure.

They are saying if they cancel the first sector that it will automatically cancel the rest of the sectors.

 

[markis10]

They are saying if they cancel the first sector that it will automatically cancel the rest of the sectors.

A do not show will not cancel the other sectors on a JQ ticket