If you're busy then wait until you have a few seconds. If not then respond. I wouldn't put too much thought into this. Just be empathetic to the sender. If I

If you're busy then wait until you have a few seconds. If not then respond. I wouldn't put too much thought into this. Just be empathetic to the sender. If I would send an invite, I'd love a quick response. But would be forgiving if it's delayed.