Stefan Heymann wrote:

>
> (1) Install both as a service
> (2) Install and run both as an application

(3) Install one as a service and another one as an application, run them
simultaneously.

(4) Setup the first instance as a service, manually change its service
names in the registry, install the second instance as a service.

> Can anybody confirm that my thinking is correct?

Yes, with one note: neither instance should be registered via instreg.
Only instsvc is allowed.


Dmitry