Hi @RC_A, not really directly.
You should use an intermediate table, and display it within a calendar view.
Here is a short tutorial
You’ve got your 2 tables
Create a “Meta Calendar Table” like this. Source is either “Project” or Procurement
Using this button, in each click I will delete all rows from MetaCalendar, and add each row from project, then the same for Procurement, to populate a fresh version of MetaCalendar
Then just use conditionnal formating to quickly check the source of your event !
Have a look on this dummy document and let me know !