Hello Sienna1 ....I came across a thread which showed you installing Blu-Logic P/N PT923-00094 vs PT923-00090 on your Corolla and you have had no conflict with the added XM adapter. I also found the install instructions for PT923-00094,
http://www.toyotapart.com/PT923-00094.pdf , and it shows a conflict problem.
Did you do anything special to make your system work? Could the PT923-00094 work differently with Gen10 Corollas.
Is it your understanding that the Head-Unit has a single port whch both the Blu-Logic and XM shares. I think that is where the conflict may occur but yet you have no issues with your installation. Why would the PT923-00094 install instructions state there will be a conflict?