As far as I can tell the only (typescript safe) way to link spans is to pass the link when creating the span as here: https://open-telemetry.github.io/opentelemetry-js-api/interfaces/tracer.html#startspan

However, it's desirable in many situations to be able to associate spans after they are created. I couldn't find any way to do this.

I would expect to be able to do something like:

span.link(otherSpanContext)

If there's a way to do this already please let me know. I could contribute this if it makes sense