handshakingSignals

Given a predicate that represents a relationship or action between entities, generate a one-sentence description explaining its meaning.  
# Instructions
Focus on describing the relationship, not the entities themselves. 
# Response Format
Begin the description with \' Indicates...\'

Predicate: handshakingSignals

Indicates that one entity is communicating or coordinating with another through a handshake-like signaling process, typically to establish, confirm, or manage a connection or agreement.