Green’s Dictionary of Slang

connect v.

also make connection
[fig. uses of SE]

1. [mid-19C+] (US) to meet; usu. as connect with.

2. [1900s–30s] (US) to succeed in obtaining something, e.g. the spoils of a burglary.

3. [1920s+] (drugs) to obtain drugs, usu. by keeping a specific appointment with the dealer.

4. [1930s] to achieve sexual fulfilment; of a couple, to conceive a child.