If need to stop application within timescaledb upgrade?

Hi
We plan to upgrade timescaledb from 2.10.0 to 2.11.1, the doc doesn’t mention if need to stop application within upgrade

Once we installed 2.11.1 package locally, it cleanuped 2.10.0 package, 2 questions, thanks:

  1. Before extension upgrade(extension is still 2.10.0 version) if application can use timescaledb well as 2.10.0 version binary is not available?
  2. If application is still using timescaledb, will it block extension update please?
# yum localinstall timescaledb-2-postgresql-14-2.11.1-0.el7.x86_64.rpm
Examining timescaledb-2-postgresql-14-2.11.1-0.el7.x86_64.rpm: timescaledb-2-postgresql-14-2.11.1-0.el7.x86_64
Marking timescaledb-2-postgresql-14-2.11.1-0.el7.x86_64.rpm as an update to timescaledb-2-postgresql-14-2.10.0-0.el7.x86_64
Resolving Dependencies
--> Running transaction check
---> Package timescaledb-2-postgresql-14.x86_64 0:2.10.0-0.el7 will be updated
---> Package timescaledb-2-postgresql-14.x86_64 0:2.11.1-0.el7 will be an update
--> Finished Dependency Resolution

Dependencies Resolved

===============================================================================================================================================================================================
 Package                                          Arch                        Version                              Repository                                                             Size
===============================================================================================================================================================================================
Updating:
 timescaledb-2-postgresql-14                      x86_64                      2.11.1-0.el7                         /timescaledb-2-postgresql-14-2.11.1-0.el7.x86_64                       19 M

Transaction Summary
===============================================================================================================================================================================================
Upgrade  1 Package

Total size: 19 M
Is this ok [y/d/N]: y
Downloading packages:
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
  Updating   : timescaledb-2-postgresql-14-2.11.1-0.el7.x86_64                                                                                                                             1/2
Using pg_config located at /usr/pgsql-14/bin/pg_config to finish installation...

TimescaleDB has been installed. You need to update your postgresql.conf file
to load the library by adding 'timescaledb' to your shared_preload_libraries.
The easiest way to do this (and more configuration) is to use timescaledb-tune:

timescaledb-tune --pg-config=/usr/pgsql-14/bin/pg_config

  Cleanup    : timescaledb-2-postgresql-14-2.10.0-0.el7.x86_64                                                                                                                             2/2
  Verifying  : timescaledb-2-postgresql-14-2.11.1-0.el7.x86_64                                                                                                                             1/2
  Verifying  : timescaledb-2-postgresql-14-2.10.0-0.el7.x86_64                                                                                                                             2/2

Updated:
  timescaledb-2-postgresql-14.x86_64 0:2.11.1-0.el7

Complete!