When using the Business URI there is no option when first redirected to choose the authorise method. i.e. Mobile or Online
Below are examples of both URI's. They both have the parameter authOnDevice=YES.
I created videos to demonstrate both as you can see for the personal flow the user is redirected to a page that asks which authorise method the user wants
For the Business, this page does not appear and they are immediately directed to the Mobile code.
I tested both URI's without the authOnDevice parameter to see what happened and even with this removed for Business users they are immediately redirected to the Mobile code page.
I would expect the behaviour to be the same for each of the auth URI's. Because we are the TPP we do not necesarily know what device the end-user is using.
We are currently only able to onboard people with the mobile banking flow for Barclays business