Question about Content Filter in Query|OPC UA Standard|Forum|OPC Foundation

1. Example 7 (Part 4, release 1.03) describes the chain RelatedTo-Equals-RelatedTo. I can not understand how it works. By standart output of Equals operator is Boolean. But in this example Equals using in RelatedTo Operand 0, type of this Operand is NodeId (of type node). Next, result of first RelatedTo - type of Area2 node - AreaType NodeId. It is a top result of logic tree. How the result 12:42 (HFamily1) and 12:48 (HFamily2) after using filter ".NodeId" was obtained?
2. In table 125 (Part 4, release 1.03) attribute "nodeId" has a description "NodeId of a Node from the type system.". In table 126 attribute "typeId" has a description "NodeId of a TypeDefinitionNode. This parameter restricts the operand to instances of the TypeDefinitionNode or one of its subtypes.". What is the difference between these two attributes?