Here are some questions about the node deployment of Bitcoin. I hope you can help me. Thanks.

Question 1
-connect=<ip>
       Connect only to the specified node; -noconnect disables automatic connections (the rules for this peer are the same as for -addnode). This option can be specified multiple times to connect to multiple nodes.

The above is a description of Bitcoin connection options. What is the maximum number of times the connection is used？in other words，How many nodes can a node connect at the same time？

Question 2
If I have an IP address of a node, can I obtain the IP addresses of all nodes connected to this node？