Integrate MS Planner with SPO Classic site

Question

I understand that we can integrate MS Planner with SPO modern site

Is there a way we can integrate MS Planner with SPO Classic site?

Answer 1

Microsoft Planner is group-connected service, you can connect classic SharePoint site to the Office 365 group, and then create a modern page and use Microsoft Planner.

Reference: Connect SharePoint Site To Office 365 Group

View or embed planner in a "normal" / classic SharePoint site.