Yes, it is possible by using FQDN based split tunneling policy which has the FQDN of the backend site.
Reference: https://www-prev.pulsesecure.net/download/techpubs/current/1626/pulse-client/pulse-secure-client-desktop/9.1Rx/FQDN-based-split-tunneling-deployment-guide.pdf
Known issue: https://kb.pulsesecure.net/articles/Pulse_Secure_Article/KB44429/?kA13Z000000L3Fn
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