Request links to help-files and directions to configure and access ISP's cellular mobile network with smartphone's Bluetooth Tethering

Dear Connman and Connman UI Development Team, the creator, Mr. Marcel
Holtmann and the team debian maintainers,

Good morning.

I have recently installed Debian 12.6.0 LXQt, having connman and its
UI as the default tool for internet configuration and access.

Familiar with network-manager and nm-applet, I installed and
successfully accessed the internet through bluetooth tethering. But
now I want to accomplish the same with connman UI without
network-manager.

I have read the man pages and briefly read the webpage:
https://git.kernel.org/pub/scm/network/connman/connman.git/about/ to
find that "Tethering support (USB, Bluetooth and WiFi AP mode)"
functionality and feature.

I have a few first queries:
Should both the connman and the dnsmasq accessing the DNS port 53
create a clash in case of Bluetooth internet tethering?

Should the DNS port for TCP,UDP for dnsmasq and connman be changed to
overcome the clash? BlueMan has the option to use dnsmasq (along with
dhcpd and udhcpd) and network-manager in NAP for Bluetooth tethering
(PAN and DUN support).

May I please be provided the links mentioned in the subject line and
be obliged. Your guidance would be highly appreciated.

Best wishes,
RKB
______________________________
A few innovations
IN191986B
https://vixra.org/author/rajib_kumar_bandopadhyay, such as:
https://vixra.org/abs/2309.0130, abs/2301.0140, abs/2301.0147,
abs/2302.0079, abs/2302.0074, abs/2302.0075, /abs/2302.0023, etc.