Right now, per Microsoft's guidance, we are running BOTH PBI Enterprise Gateway AND PBI Personal Gateway to accomplish making datasets with both on-prem and SPO data sources... A limitation of the PBI Enterprise Gateway has been you can either manipulate ONLY on-prem data in a single dataset/dashboard, and ONLY SPO/online data in a single dataset/dashboard, but you CANNOT use both in one dataset/dashboard....
This is frustrating and obnoxious to do, and the PBI Personal Gateway is just that - a personal gateway and can only be managed/used by one account.
Has MS updated the PBI Enterprise Gateway to allow the use of both on-prem and online data sources in a single dataset/dashboard yet? I know I'm not alone in this request...