CountIf with Multiple Multiple Conditions!?!

Hello Everyone,

First time, long time - I've found help here numerous times but this time I'm stumped. My heartfelt gratitude is extended prior to anyone answering with the hope you are able to help.

Here goes:
I have a spreadsheet with almost 103,000 rows and 28 columns of data from which I'm creating multiple pivot tables.
The rows in Column 'A' contain one of two values, either "Big" or "Sky". Column 'B' contains a Customer Number, a six-digit code. Column 'C' contains the formula =COUNTIF($B$2:$B$10300,$B2), giving me a count each Customer Number. This is great, I now know if that Customer Number is a one-time or repeat customer.

The problem is, I now need to know if that Customer Number is a repeat customer of both "Big" AND "Sky". Is there a formula that can return something simple as a "1" or "Yes" - anything that will allow me to pull/sort in a pivot table - for this criteria.

Make sense?
Any/all help is appreciated...