chrony question about -x option

 Hello

I want to use chrony on a host "A" connected to the Internet which should
act only as a kind of NTP relay to serve the time from an NTP server on the
Internet to another host "B" on the local network. But I don't want to set
the system clock of host "A" with this Internet time.
To achieve this, I plan to start chrony on host "A" with the option -x.

The system clock of host "A" is controlled by another process getting the
time from the local network.
Will the Internet time served by host "A" be impacted by the fact that the
system clock is adjusted by the other process ?
The host "B" needs to synchronize to the raw Internet time in order to keep
the best accuracy.

Regarding the option -x, in chrony 3.5 there was the following note:
It is not recommended to run *chronyd* (with or without *-x*) when another
process is controlling the system clock.
But this note has disappeared since chrony 4.0.
Should I understand that what I want to do is feasible with chrony 4.x but
not with chrony 3.x ?

Thanks,
Hubert