Parent - child in separate indices

Elastic Stack Elasticsearch
1

Hi,
is it possible to use parent-child relation if parents store in index1/type1 and child store index index2/type2?

2

Parent-child relationships are limited to documents within the same index. This is because in order to work efficiently the parent and child need to both be stored on the same shard.

3

See also Can we give parent/child relation ship between different indexes