Source :in the minddle paragraph
I had the pleasure of running into John Paulson this past week where I got to introduce myself in passing.
This past week is a time ,not a place.
When is a time-relative pronoun that joins a modifying clause.
Where is a location-relative pronoun that joins a modifying clause.
For example:
The day when the concert takes place is Sunday.
The site where the concert will take place is Golden Gate Park.
Maybe the sentence :
I had the pleasure of running into John Paulson this past week when I got to introduce myself in passing.
It is a typo in the article ?