So, I am trying to understand if this is possible:

total hardware 

2 x powerline adapters with 2 ports each 

1 unify switch 

1 unify WiFi point

i have a modem Ethernet connected to first-powerline (left port)

First-powerline is connected to a second-powerline 

second-powerline is connected to a unify switch (left port)

unify switch connected to second-powerline (right port)

first-powerline right port to a unify extender

so I want to use the powerline to bring the internet to my unify switch and also connect my switch and UniFi wifi point. 
left port switch brings internet to the switch 

right port connects switch and wifi point 

thank you