Error when encoding row-level formula: Incorrect number of parameters for function 'DATE()'. Expected 3, received 1

Hi everyone, I am trying to calculate the time to completion per agent by using the following formula [(A-B)-C]:

(Talent__c.Timestamp_Contract_Signed_State__c - Talent__c.Employee_Invited_Date__c)-Talent__c.Elapsed_Time_Relocation_Immigration__c

(data type: date - formula(date) - formula(number))

It works fine besides the fact that I also need the result to be calculated only on business days.

I have tried then the following:

9 * (

( 5 * FLOOR( ( DATE( Talent__c.Timestamp_Contract_Signed_State__c ) - DATE( 1900, 1, 8) ) /

7) +

MIN(5,

MOD( DATE( Talent__c.Timestamp_Contract_Signed_State__c ) - DATE( 1900, 1, 8), 7) +

MIN( 1, 24 / 9 * ( MOD( Talent__c.Timestamp_Contract_Signed_State__c - DATE( '1900-01-08 08:00:00' ), 1 ) ) )

)

)

-

( 5 * FLOOR( ( DATE( Talent__c.Employee_Invited_Date__c) - DATE( 1900, 1, 8) ) /

7) +

MIN( 5,

MOD( DATE( Talent__c.Employee_Invited_Date__c ) - DATE( 1996, 1, 1), 7 ) +

MIN( 1, 24 / 9 * ( MOD( IF(AND(Talent__c.Employee_Invited_Date__c < DATE(TEXT(YEAR(DATE(Talent__c.Employee_Invited_Date__c))) + '-' + TEXT(MONTH(DATE(Talent__c.Employee_Invited_Date__c))) + '-' + TEXT(DAY(DATE(Talent__c.Employee_Invited_Date__c))) + ' 08:00:00'),Talent__c.Employee_Invited_Date__c >= DATE(TEXT(YEAR(DATE(Talent__c.Employee_Invited_Date__c))) + '-' + TEXT(MONTH(DATE(Talent__c.Employee_Invited_Date__c))) + '-' + TEXT(DAY(DATE(Talent__c.Employee_Invited_Date__c))) + ' 00:00:00')),DATE(TEXT(YEAR(DATE(Talent__c.Employee_Invited_Date__c))) + '-' + TEXT(MONTH(DATE(Talent__c.Employee_Invited_Date__c))) + '-' + TEXT(DAY(DATE(Talent__c.Employee_Invited_Date__c))) + ' 08:00:00'),Talent__c.Employee_Invited_Date__c) - DATE('1996-01-01 08:00:00'), 1) ) ) ) ) )-Talent__c.Elapsed_Time_Relocation_Immigration__c

What I am getting in the validation is the following error:

Error when encoding row-level formula: Incorrect number of parameters for function 'DATE()'. Expected 3, received 1

Any help to fix the error would be greatly appreciated! Thank you