The phrase "advised each other" is correct and usable in written English.
It can be used when referring to a situation where two or more people give recommendations or suggestions to one another.
Example: "During the meeting, they advised each other on the best strategies to improve their project outcomes."
Alternatives: "counseled one another" or "recommended to each other."
They took golf trips (Byrd drilled two holes in one with Stallings) and advised each other in recruiting.
Armenian and Jewish scholars have long collaborated and advised each other on the collection of witness testimonies and documentation of their suffering.
The groups used some of the same means to launder proceeds from illegal sports gambling Web sites, and they often advised each other, said the assistant United States attorney prosecuting the case, Harris Fischman.
Around the world, the buildup to take part in something so rare was palpable: people tweeted their plans to watch the transit and organised themselves into local groups, they advised each other about the safest ways to take part and quizzed scientists about the things transits can tell us about exoplanets and other heavenly mysteries.
"We've always been there for each other, we've always advised each other," Pierce said.
They provided encouragement and advised each other to relax to avoid the stress, due to the illness, that might make the things worse.
They advise each other on how to kick in doors and how to handle pregnant subordinates.
It definitely has an impact; afterwards people do discuss what they have seen and they start advising each other," says Kamara.
"The relationship between Korea and the U.S. should be one between friends who can advise each other in the right direction.
They can then trade sheets after they've been constructed and advise each other on areas for development on any key topics missed.
The only alternative to doubt is to cut your losses and move on: a number of characters here advise each other to forget, to break the past's terrible grip.
