this person can be

this person can be the conveyor or conduit of news of major importance.
I can’t work out with the bold part. Cold anyone please explain it to me?

“news of major importance” = very important news

This person can be the conveyor of important news = they can convey the news.

This person can also be a conduit of important news = they can be a channel through which the news passes.

The two things (conveyor and conduit) are similar in this case, and are used together to bolster the point.