Coroutines and events - do they share the same thread of execution?

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1

If you have a coroutine and it’s running
And an event fires
Does the coroutine have to yield before the event can get processed?

2

Callback functions connected to events are ran in their own threads of execution.

local game = game
local runService = game:GetService("RunService")

local connection

local function onRenderStep()
	connection:Disconnect()
	print("Event thread: ", coroutine.running())
end

connection = runService.RenderStepped:Connect(onRenderStep)
print("Main thread: ", coroutine.running())

--Main thread:  thread: 0xd6d575ed15c1a824
--Event thread:  thread: 0xbcaafd949dd1d8a4