'And' effect search for multiple nested object

Elastic Stack Elasticsearch
2

Come across the the link - Querying a multiple level nested object. That basically helps solve my problem.

Instead of separated paths on different nested object query,

{
    "query": {
        "bool": {
            "must": [
                { ... nested query on path1 }
                { ... nested query on path2 }
            ]
        }
    }
}

query should be specified with base path then down to the deeper level. So each level can specify its own condition.

"query": {
    "nested": {
        "path": "level1tag.level2tag.level3tag",
        "query": {
            "bool": {
                "must": [
                    {
                        "term": { "level1tag.level2tag.level3tag.level3_attr1": "value A" }
                    },
                    {
                        "nested": {
                            "path": "level1tag.level2tag.level3tag.level4tag",
                            "query": {
                                "bool": {
                                     "must" : [
                                         { "term": { "level1tag.level2tag.level3tag.level4tag.level4_attr1" : "value B"}  }
                                      ]
                                }
                            } 
                        }    
                    }
                ]
            }
        }
    }
}