Many journals are published by universities and research institutions. For example, Oxford University, Johns Hopkins University, Cambridge University, and Cold Spring Harbor Laboratory all have their own journals.
Since having reviewers from the same institution is often considered a conflict of interest (SE answer), is publishing in a journal that is published by your research institute also considered a conflict of interest, since the editor is often from the same institution? Is it considered any different from publishing elsewhere?
Additionally, are there any guidelines by universities or their respective publishing boards that touch on these issues?