Patching ODA X7-2HA with 19.12

Hello All

We are planning to upgrade our production X7-2HA ODA with 19.12 (and then later to 19.18)

For now we are focused on 19.12 patching and using the following document that we use to patch our X7-2S and X7-2M ODAs

https://docs.oracle.com/en/engineered-systems/oracle-database-appliance/19.12/cmtxn/patching-oda.html#GUID-F28EE29B-5047-42C8-AEE5-D8281D48EA3A

Here are the steps required for the patching and in the document there is no mention of as to if we need to execute the steps on only node-1 or both nodes so we are trying to figure out as to which steps needs to be executed on both nodes and which step only needs to be executed on Node-1 only