Can I use 2 data sources from the same Workbook in one formula?

[Staci]

I currently have a Workbook with two datasources, "Test Cases", "Defects" (these are generated from an external system so I can't modify or combine the original datasources)

• The "Test Case" datasource provides information about Test Cases including the Status, The associated Defect number(s), and the associated Project number.

[TABLE="width: 500"]
<tbody>[TR]
[TD]Test Case #[/TD]
[TD]Project #[/TD]
[TD]Status[/TD]
[TD]Associated Defect #[/TD]
[/TR]
[TR]
[TD]11[/TD]
[TD]PR12345[/TD]
[TD]Fail[/TD]
[TD]40202.0001[/TD]
[/TR]
[TR]
[TD]12[/TD]
[TD]PR12345[/TD]
[TD]Fail[/TD]
[TD]40202.0001,90210.0001[/TD]
[/TR]
[TR]
[TD]13[/TD]
[TD]PR98765[/TD]
[TD]Pass[/TD]
[TD][/TD]
[/TR]
[TR]
[TD]14[/TD]
[TD]PR98765[/TD]
[TD]Fail[/TD]
[TD]12321.0001[/TD]
[/TR]
</tbody>
[/TABLE]

• The "Defect" datasource provides information about Defects including the Defect number, the Impact and the associated Project number.

[TABLE="width: 500"]
<tbody>[TR]
[TD]Defect #[/TD]
[TD]Impact[/TD]
[TD]Associated Project #[/TD]
[/TR]
[TR]
[TD]40202.0001[/TD]
[TD]Critical[/TD]
[TD]PR12345[/TD]
[/TR]
[TR]
[TD]90210.0001[/TD]
[TD]High[/TD]
[TD]PR12345[/TD]
[/TR]
[TR]
[TD]12321.0001[/TD]
[TD]Medium[/TD]
[TD]PR98765[/TD]
[/TR]
</tbody>[/TABLE]

I can not deduce a formula to Count the Quantity of test cases that are Failing WHERE the impact of the associated Defect(s) is limited to High and Critical ONLY. (I do not want to include in my count the test cases that are failing, WHERE the impact of the associated Defect(s) are either Medium or Low).

I've gotten as far as a formula for counting the total number of test cases that Fail

• =Countif(Test Cases!C2:C25,Fail)

I can break that down into the total number of test cases that fail per Project

• =Countifs(Test Cases!C2:C25,Fail,B2:B25,PR12345)

I just do not know how to combine the information from the Defect datasource to limit the count.

Also note the format of the Associated Defect(s) on the Test Case data source...if more than one Defect is associated to the same Test Case then all of the associated Defects are listed in the same cell, comma-delimited.