Hi,

I believe you can share courses between instances of Moodle 1.9 and Totara 1.1 using MNet:

http://docs.moodle.org/19/en/MNet

However MNet support is due to end in Moodle 2.3.

Once Totara 2.2 comes out you may also be able to get this to work using the new community hubs feature:

http://docs.moodle.org/22/en/Community_hubs

Aside from that, I think the only way to do this is to write some custom code.

Is there a reason why you need to have two separate sites at all though? Totara 1.1 contains all the same features as 1.9, plus the extra Totara stuff, so another option would be to migrate your moodle to Totara and avoid having two separate sites.

Simon