Yes, internal coolant consumption can damage a catalytic converter.
They will not only damage it they will destroy the converter.
Yes it can
yes it can because oil cal leak into the exhaust system and contaminate the catalytic converter
Yes, it can damage the engine.
It can't the converter is in the exhaust system
Yes, you can do serious damage to the engine if the converter is clogged.
A bad coil can damage a converter. If the engine is misfiring, it will cause raw fuel to get into the converter and that can cause failure.
The heat generated by the converter can back up into the engine and damage it. Cause it to overheat, blow a head gasket or damage the heads.
Catalytic converter due to unburned fuel being burnt in the converter. It can also cause damage to the ignition module.
Depending on the cause of the misfire, it could damage the catalytic converter.
Yes it can if the oil gets in the catalytic converter when due to bad rings or head gasket burned the oil gets on top of the pistons!