I see the benefit of displaying how a bill applies to multiple purchase order (PO) line items, @lisapell2000.

Let me share some details about bills in QuickBooks Online (QBO). 

We can open the PO and we'll the lines that have been linked or closed on the bill. Here's how:

1. Go to Vendors.
2. Choose Transactions and click PO transactions.
3. Open the PO and you'll see the closed lines.

Please see the screenshot below for visual preferences.

You can also check out this article for additional guidance on tracking bills and recording payments: Enter and manage bills and bill payments in QuickBooks Online.

Please feel free to comment below if you have concerns about bills or other QBO-related issues. We are always here to assist you.