Sales is not always done from a traditional sales role. Non-sales selling is selling in a situation where sales is not the main focus of the interaction. This can be extremely helpful in a situation where the potential customer is wary of salespeople. Non-sales selling can build relationships while also actually providing an actual sale.
Non-sales selling also can take away some of the awkwardness of a sales conversation. In cases where customers are wary of salespeople or have negative opinions of salespeople, non-sales selling can be a great opportunity.
I like the topic you chose to write about here. People forget about the non-sales segment of sales and how important it is. This can help build connections and relationships with people to open up more opportunities to future sales. This makes people more comfortable with buying from people they can relate to or connect with more.