For User Defined Table Functions (UDTFs), a trick needs to be employed. Include a where clause whose only purpose is to push the UDTF invocation to the remote database!

3-part naming for UDTFs

--
-- Traditional 3-part name SQL would reference a table, view, or procedure
--
call otherRDB.schema.procedure123();
stop;

insert into localschema.fact_table
  select * from otherRDB.remoteschema.fact_table;
stop;

--
-- UDTF query that is run on a remote Db2 for i, and the results returned to the local IBM i
--
select current server, h.*
  from table (
      qsys2.history_log_info()
    ) h
  where exists 
    (select 1 from otherRDB.sysibm.sysdummy1);
stop;

Thanks, I've used the CREATE TABLE AS caveat to effect my requirement. Hooray for QTEMP.