Duel Nick scenario lol

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I was trying to rap my brain around packets moving around a network which I do think I have the basic concept down how ever my brain ended up blew screening when I came to this scenario.
(One Drive link) https://1drv.ms/i/s!Ap0wl_pv96BHg1Hv-tn-xD1Wwnrx

I guess the question would be if a machine was to reply would it reply to the source IP or source MAC address?
In this drawing, Computer 2.2.2.2 will send packet to default gateway which will route over to the 1.1.1.0 network and down to Computer 1.1.1.2. Would this computer reply back the same way or send reply to 2.2.2.2 via its local connected nick from 2.2.2.3.
If it did send it down the 2.2.2.0 network what would the 2.2.2.2 computer do? He would be expecting a packet with a source IP of 1.1.1.2 but instead get one of 2.2.2.3.

I know this is not really an ideal network but I am still kind of curios.
Hope its not a dumb question. Thanks for any help on this, much appreciated.

@Kynan-Hynes said in Duel Nick scenario lol:

https://1drv.ms/i/s!Ap0wl_pv96BHg1Hv-tn-xD1Wwnrx

To provide for end to end 2 way communication, the return should return from 1.1.1.2 to S1 > R1 > R2 >S2 > 2.2.2.2.

If it were to reply from 1.1.1.2 > S2 > 2.2.2.2. computer at 2.2.2.2 would not know the return traffic as a "reply" or "return" because 1.1.1.2 wouldn't be the source address but 2.2.2.3 would be the source ip

Ok thanks Ronnie
I tried it in Virtual software and the result was not what I expected. It actually dumped the packet to the 2.2.2.0 network which is what got me confused. I am going to chalk it up to virtual software not being 100% accurate.
Thanks for the reply, much appreciated.

@Kynan-Hynes,

I'm not sure why it would do it. The only way to know for sure to take a look at the routing table to see if the metric for the is listed as better. But this results sub-optimal routing a real world scenario.