How to let multiple SQL Server instances use PolyBase (best practice with ?Linked Servers)?

I know PolyBase can only be installed on one SQL Server instance per host. **In my setup:** - Instance A already uses PolyBase for its own external data queries. - Instance B (on the same server) also needs access to external data. Since I can’t install PolyBase twice, my plan is for B to query A via a Linked Server. - Windows Server 2019 running SQL 2019 on prem **Questions:** 1. Is using Linked Servers in this way considered the best practice, or are there cleaner alternatives? 2. Any security/authentication recommendations (Kerberos, least privilege)? 3. What about performance (four-part names vs. OPENQUERY, predicate pushdown)? 4. Should I expose views in A for B to query, or reference A’s external tables directly? 5. Any known operational issues (timeouts, monitoring, transactions)? I havent tried it yet, so I’d appreciate any guidance or alternative approaches that work without adding a second server.