Connecting models in different databases with query builder

I'd like to connect two models that are in different databases using models and builder.

I'm using phalcon 1.3.4 and i have in example db A(table Invoices) and db B (table logs).

Now I'm trying to get data from db B someyhing like this :

    $logs = $this->di->get('modelsManager')
        ->createBuilder()
        ->columns(
            array(
                'log.code',
                'inv.codeA',
                'log.request',
                'log.response',
                'inv.createdAt'
            )
        )
        ->addFrom('App\Model\Logs', 'log')
        ->leftJoin('App\Model\Invoices', 'inv.code = log.code', 'inv')
        ->getQuery()
        ->execute();

And it keeps trying to join table invoices that is defined in db A. And keep geting

SQLSTATE[42S02]: Base table or view not found: 1146 Table 'B.invoices' doesn't exist

I can join those tables in plain sql, probably rawSql approach would solve it but I'm wondering if it's possible doing models?