you use same subnet (10.10.10.0/24) both left and right in this diagram.
this topology is not incorrect as stated in other posts,
It is not very common for a new design, but it could occur when merging two networks that both are using 10.10.10.0/24
-> both routers need to know which 10.10.10.1 is left and which is right, that needs an extra trick.
some solution is to use NAT on the interconnecting link
NAT left 10.10.10.0/24 to 10.10.100.0/24 on the interconnect
NAT right 10.10.10.0/24 to 10.10.101.0/24 on the interconnect
create routes so that routers know where to find these new subnets
from left use 10.10.101.1 to access the right 10.10.10.1 address
from right use 10.10.100.1 to access left 10.10.10.1 address
other solution is to use DMVPN in hub-and-spoke configuration
for this you need an extra router in the middle as hub
