Hello there. Thank you for your timely reply.
No, these are in the same transaction. To give you one of the examples, here is a screenshot of the Resolution Page for one of them (with some information blanked out just in case, as this is a public post):
It's possible, but the first two also took a while to file their own claims, so it may just be that they're waiting to do so, which is why I was hoping to nip it in the bud before it happened.
Nah, these are straight out of the Paypal Resolution Center, not through e-mails. The first warning I got was the e-mail from Paypal mentioning the first filing had occurred, so rather than going through the e-mail's link, I immediately manually logged into Paypal. I did the same after the second filing. I definitely didn't fall for a phishing scam, thankfully.
I had actually wanted to do this beforehand, but unfortunately I lacked a credit card that worked for Paypal to do this with (the bank I use uses the Interac system instead, so I wasn't able to register my credit-enabled debit card with them). 'll maybe have to look into doing this in future, but I appreciate the suggestion.
Thank you for the reply, and I hope this further information will help clarify the situation, and potentially show you how the scam is working.