Some sections are added under Google news and now it is coming under Google news but in google main SERP it stays only for few hours and then it vanishes. Also now we see that the pages that are ranking for Google news are (May) not ranking in main Google SERP (very recent change). Is there any connection between Google news listing and main Google listing.
My main concern is: Is Google treating the news items different than the pages which are not submitted under news.
I have not experienced a problem with having news content appearing in Google's standard serps. Using Google News I have considerably grown my traffic levels without cannibalizing my preexisting traffic referrals.
I do think that news content has some different characteristics from evergreen static content pages. For example some people view it as more time sensitive. Those people are less likely to link to it which may lead to less link juice which leads to less ranking power in Google's serps.