Blank a column if a condition is met

I have a established a custom list with 5 columns for testing.

1. Title column
2. Date columns (Date1 & Date2)
3. Calculated column to count days between the 2 dates (Total)
4. Calculated column to count how long it was since the first date column was entered (How Long).

What I am trying to accomplish is that when the "Date2" column is filled the "How Long" column will blank out.

Example:

So in this case because there is a date in the "Date2" column I want the "How Long" column to be blank. The current formula for my "How Long" column is simple: =Date1-TEXT(NOW(),"mm/dd/yyyy").

Is it possible to add additional syntax that will blank the "How Long" out when a date is entered into "Date2"?

=IF(NOT(ISBLANK(Date2)),"",Date1-TEXT(NOW(),"mm/dd/yyyy"))

=IF(ISBLANK([Date Column]), "Date column is blank", "Date column is filled")

=IF(ISBLANK([Date2]), [Date1]-TEXT(NOW(),"mm/dd/yyyy"), "")

=IF(ISBLANK(Date2),"",Date1-TEXT(NOW(),"mm/dd/yyyy"))