Views two content type relations I have two content types.
1. Referrals: Name, other info type fields
2. Referral semesters: start date, end date

I want to list all referral semesters out while counting the number of referrals there were in between the referral semesters start and end time. Looking at the referral creation date.

I've started a view of semesters but see no where I can relate it to referrals in the relationship area.

example:
Spring 2016: 17
Summer 2016 : 22
I think the entity reference view may help you in this case.

Ref: http://codekarate.com/daily-dose-of-drupal/entity-reference-view-widget