Exasol not exporting in parallel to PostgreSQL

We have a connection in Exasol (v7.0.18) to PostgreSQL (v14) created like this

create or replace connection POSTGRES_DB to
    'jdbc:postgresql://hostname:5432/my_db?useCursorFetch=true&defaultFetchSize=2147483648'
    user 'abc'
    identified by <>;

I am running an export statement using this connection like this:

EXPORT MY_SCHEMA.TEST_TABLE
    INTO JDBC AT POSTGRES_DB
    TABLE pg_schema.test_table
    truncate;

This works without any error.

The issue is that it runs only one insert statement in the PostgresSQL at a time. I am expecting multiple inserts running at a time in PostgresSQL.

This documentation page says Importing from Exasol databases is always parallelized. For Exasol, loading tables directly is significantly faster than using the STATEMENT option.

How can I make the export statement do parallel insert into PostgreSQL?