CVS and 3rd party coupons: order of scanning (mostly Coupon24 )

When you're at CVS and you want to use CVS coupons plus Coupon24 coupons:

What order are y'all using to scan things? Do you ever change up your order?

Are there special methods to increase the chance of stacking or to use common glitches?

From my experiments and from other people's posts, I think the most common at self-checkout is

1. scan items
2. scan Coupon24
3. scan CVS card or enter phone number
4. finish and pay
5. select coupons
6. pay,

keeping in mind that manufacturer coupons from CVS generally don't stack with Coupon24.

One variation that I've seen is this. Thank you to whoever pointed this out, I forget who:

1. scan items
2. scan Coupon24
3. finish and pay
4. go back
5. scan CVS card or enter phone number
6. finish and pay
7. select coupons
8. pay,

Does this help in certain situations?

Thanks to Panthera91 for their help with my related question.