Unable to determine on the agent end if the calls are overflow

Hi, 

Good day. 

We are unable to determine on the agent end if the calls are overflow. 

Hopefully, talk devs would check and revisit the setup. 
Devs can just add a tag to every ticket that is created from overflow. 
Same with this article: 
https://support.zendesk.com/hc/en-us/articles/360001900507-Managing-overflow-calls-and-after-hours-routing-Talk-Professional-and-Enterprise-#zug_talk_overflow__section_q45_qpf_dfb