Multiple Date Columns To Sync To The Same Outlook Calendar

Is it possible to make multiple columns in the same board sync to the same outlook calendar? I am able to get one date column to sync to my outlook calendar, but when I attempt to sync a second date column it creates a whole new sub calendar in outlook. If it is possible can you please walk me through the proper steps to sync two date columns from the same board into one calendar in outlook.

Thank you,