Splunk Add-on for Box and multiple Box tenants

We have a customer that has two Box tenants for legal separation but would like to use a single Splunk instance for event tracking. A previous question in 2016 asked a question which hinted that it might be a future addition. Has it been added and if not, is there a way to have two Box tenants feed 1 Splunk instance? What would the box add-on deployment look like? Thanks in advance.