It's not necessarily great written English (might need to check that with a style guide), but I would view that kind of construct to be an OR, rather than an AND.
So in the specific example you give
Quote From ApolloBullit:
For example, sentences like "Respondents are (re)considering, (re)thinking and (re)negotiating their positions in the organisation"
I would interpret that as meaning that people are either considering OR reconsidering their positions etc. I would further interpret that as some people are considering this for the first time, others have considered it in the past and are now reconsidering it again.
Hope this helps.