Can custom connector use kerberos sso with power bi service？

[FengJinghHua]

Hi ， I have some confuse about power bi kerberos sso，I found some documents like:https://docs.microsoft.com/zh-cn/power-bi/service-gateway-sso-kerberos, it show me only some connectors can use kerberos sso. I have two questions:

1: custom connector can use kerberos sso? if yes, any some extra developed work in powerbi？ or only develope in connector and datasource

2：powerbi service support kerberos sso？ or only powerbi desktop

I am eager to have relevant answers and documentation， thank you