I can confirm..... that you can have Xfinity and Verizon on the same phone.
I just stopped at Verizon and put my work line on my iPhone 11 Pro Max as the eSim line.
So I have Xfinity (physical sim) and Verizon (eSim) on the same phone.
Walking into Verizon and getting the line setup on the esim took about 5 minutes. simple process
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