Recreating DBAL structure on Laravel ORM?

Question

Laravel

Good afternoon, there is a structure that I built on DBAL

DBAL::createQueryBuilder()
            ->select('u.id_read','n.id_user')
            ->from('news', 'n')
            ->leftJoin('n', 'user', 'u', 'u.id_read = n.id_user')
            ->where('u.id_user = ?')
            ->andWhere('n.created_at > u.created_at')
            ->setParameters([
                0       =>      1,
            ])
            ->execute()->rowCount()

I just have a problem only in ->andWhere('n.created_at > u.created_at') and I can't adjust it to Laravel ORM in any way.

$laravel = App\News::join('user', 'user.id_read', '=', 'news.id_user')
            ->where([
                ['user.id_user', '=', 1],
                ['news.created_at', '>', 'user.created_at']
            ])
            ->count();

It doesn't work at all like it worked on DBAL, help guys, maybe something is wrong.