Capital One 360 Performance Savings Questions

[Zoostation1]

I have two questions regarding Capital One and their 360 Performance Savings account.

1.  The fine print suggests they do a credit check.  Is this a soft or hard pull? I'm thinking soft pull but want to confirm beforehand (I refuse to open a savings account with anyone who's going to do a hard pull)
2.   How long does it typically take to "link" a checking account from another institution to it (to use their terminology). I have two credit cards with them and would be funding the savings from the same checking account I pay my cards off with.

Any info would be appreciated!

[simplynoir]

1. Soft pull as long as you opt out of overdraft protection

https://www.doctorofcredit.com/capital-one-100-500-savings-bonus-requires-10000-100000-deposit/

2. Depending on whether they're part of the Plaid network otherwise it's one of those "link bank accounts, wait for verifying deposits which take 2-3 business days and it will be official after verification" kind of deals