Questions are being raised over how the salvaged Newshub 6pm bulletin will be pulled off in its new format.

Stuff has signed on to produce and provide a daily bulletin on TV3 from July 6, following Newshub's closure.

The Spinoff founder and media commentator Duncan Greive told Mike Hosking that the level of scrutiny and quality of performance required to produce 6pm TV news will be challenging.

He says the Stuff staff he's spoken to were expressing this, adding they just don't have a lot of runway to get to the TVNZ or Newshub standard.

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