"Last contact" refers to the most recent interaction or communication you had with someone before you stopped talking or lost connection with them. Full definition
They are the first and last contact with our clients and key to creating lasting impressions. (broadwayanimal.com)
I wanted to check in on our conversation from [Last Contact Date] regarding [Company's Open Position]. (blog.simplyhired.com)
Readers whose last contact with organized community action groups occurred in the 1960s and «70s may miss two important characteristics of the Industrial Areas Foundation - related new - style outfits. (religion-online.org)