Can I link multiple bank accounts at the same time?

You can link multiple bank accounts only if you hold them all with the same bank. To do so, 

1. Tap Bank Accounts under the My Accounts section.
2. Tap Add Bank Account.
3. Tap Link next to the bank account you wish to link.
4. Tap View Details to select the account(s) you wish to link.  
5. Enter the OTP sent by your bank and tap Submit. 

Related question(s):
What if I'm unable to find my bank?