Hi, can anyone help me combine these two formulas on a date field please?

IF the Portfolio is Interfaces and the Status is Agreed and the EA Action is one of 3, then the date should be Expected Submission Date -28, +14 or +42.
PLUS
IF the Portfolio is Interfaces and the Status is Invited and the EA Action is First Invitation Chaser, then the date should be Invite email sent + 28 days

I have them both working on separate fields, but can't get them into one formula.

Formula 1:

IF( AND( Journal_for_Article_use__r.Portfolio__c = "Interfaces",
ISPICKVAL( Status__c , "AGR - Agreed to submit")
),
CASE( TEXT( EA_Action__c ),
"Submission Reminder", (Expected_Submission_Date__c - 28),
"First Submission Chaser", (Expected_Submission_Date__c + 14),
"Second Submission Chaser", (Expected_Submission_Date__c + 42),
Null
),
Null
)

Formula 2:

IF( AND(
Journal_for_Article_use__r.Portfolio__c = "Interfaces",
ISPICKVAL( Status__c , "INV - Invited")
),
CASE( TEXT( EA_Action__c ),
"First Invitation Chaser", (Invite_email_sent__c +28),
Null),
Null)

Hi, can anyone help me combine these two formulas on a date field please?

IF the Portfolio is Interfaces and the Status is Agreed and the EA Action is one of 3, then the date should be Expected Submission Date -28, +14 or +42.
PLUS
IF the Portfolio is Interfaces and the Status is Invited and the EA Action is First Invitation Chaser, then the date should be Invite email sent + 28 days

I have them both working on separate fields, but can't get them into one formula.

Formula 1:

IF( AND( Journal_for_Article_use__r.Portfolio__c = "Interfaces",
ISPICKVAL( Status__c , "AGR - Agreed to submit")
),
CASE( TEXT( EA_Action__c ),
"Submission Reminder", (Expected_Submission_Date__c - 28),
"First Submission Chaser", (Expected_Submission_Date__c + 14),
"Second Submission Chaser", (Expected_Submission_Date__c + 42),
Null
),
Null
)

Formula 2:

IF( AND(
Journal_for_Article_use__r.Portfolio__c = "Interfaces",
ISPICKVAL( Status__c , "INV - Invited")
),
CASE( TEXT( EA_Action__c ),
"First Invitation Chaser", (Invite_email_sent__c +28),
Null),
Null)