HA Events with RAC

Is anybody familiar with the HA Events and RAC?
I use a RAC with 2 instances. After shutting down the instance to which my client is connected, I would expect that the lost connection pool is recreated automatically on the surviving instance. But it isn't.
Using HA Events in the connection string, I receive a failover event on the connection after the instance shutdown. But only 6 minutes later.
6 minutes seems useless to me, maybe it relates to the connection pool management cycle which is 3 minutes according to the documentation.
After doing the failover, the connection pool is not recreated either.
e.g. if I had 3 connections on the crashed instance, I only see 1 connection after the failure (looking at v$session).
I don't think, that this is a setup or configuration problem.
Has anybody some experience on this and can tell me how the HA Events are supposed to work?
Maybe the Oracle development team can help?
Thank you.

Thank you. I would exactly expect what you mentioned.
However, I observe the following behaviour
1) shutting down my instance does not re-establish new connections on the second instance. This makes make believe that my old connection stays severed.
2) re-using my connection after the shutdown still fires a failover-event on the connection. This makes me believe that this connection is still severed. After this first re-use (and after the failover event) the connection is moved to the second instance. But this is also the case if I don't use HA Events in the connection string.
3) The only difference of using HA Events in the connection string is the fact, that I receive after 6 min. a failover-event on the connection. Without HA Events I don't receive this one, but point 1) and 2) are still the same.
This makes me believe that my setup is OK.
Do you have any other hint or tip?
Thanks so much.
Regards,
Urs

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