Difference bw dates in power BI

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Hi all,

Here is the requirement with sample data. Please have a look and let me know if you need more info.

I have a main table like below and I separated into two tables Table 1 and Table 2 based on the application ID to find the greater date between two tables.

I'm not able to bring user id ( which is available in customer table) to match two tables but facing multiple valuse issues. To bring user to either table1 or table2 facing issue. 

=calculate(values(userid))

Requirment:

Regards, Krishna