Yes you could daisy chain and there might be a bottle neck - however if both are Gbit capable - is that an issue and how often would that happen?
Yes, connecting both to the router would also work - that moves the potential bottle neck into the router and you could have a lot of traffic going through there.
Personally, I would go down the third route - a 16 port (or even 24 port) switch.
I invested in a Managed Linksys 2024 several years back and it is still going strong!
M H C
taurus excreta cerebrum vincit