Welcome to the forum, @EtagiBI.
Thanks for the question.
No. Not currently.
But it would make a good enhancement request!
Do you have a Github account? You could submit it as a “Feature Request” to the Collabora Online github:
It would probably also help to include a link to:
and any other examples/supporting documentation/use-cases you have on it.
As to the technical reasons why it isn’t implemented yet…
There are a lot of tricky issues with loading external resources/files, or running across “infinite loops” where A->B + B->A.
So right now, each Collabora document is “stuck in its own jail”.
Side Note: On a similar note:
- Links to ranges in other external documents isn’t supported yet either.
It is in the list of feature enhancements though.
I even brought it up back in July’s weekly meeting #128: