Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 193; Flight Crew Total 4143; Flight Crew Type 860
Distraction; Communication Breakdown; Confusion
Deviation / Discrepancy - Procedural FAR; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Requested ATC Assistance / Clarification; Flight Crew Became Reoriented
Human Factors
On arrival to ORD from ZZZZ  at approximately XA:50Z near RHIVR; 121.5 (guard) frequency became saturated with multiple [name related statement] calls.  These calls stepped on several ATC transmissions and interrupted communications with arrival control; creating a safety of flight issue.  After approximately 1-2 minutes; the calls ceased; allowing clear communication to continue. The high potential for a serious incident to occur as a result of the lack of communications discipline or crews choosing not to monitor 121.5 is alarming and requires immediate attention.
Air Carrier pilot reported non-emergency flight related transmissions on Guard frequency. Reporter stated this resulted in interrupted communications; creating a safety of flight issue.