Calling SignalR via AWS Websockets Gateway

This may not be possible, but I thought that I would at least ask.

In AWS API Gateway for Websockets, the gateway itself handles the connections. The backend ASP.NET Core application receives an event containing $connect/$disconnect and a connection id.

Is it possible to use the SignalR framework in this case?

There are (of course) other ways, but it would be great to be able to use SignalR.

Suggestions welcomed.