VLAN to LAN visibility

Hello,

I have workstation A connected to SRX240 on ge-0/0/5 (one of the ports that acting as a switch) for VLAN123 (zone trust)
for network A.A.A.A/24 with (LAN DHCP). Workstation A has access to the Internet.

In the same room I have unmanaged switch connected to the back of ISP modem (that setup for LAN B.B.B.B/24)
Laptop B is connected to that unmanaged switch.

Is it possible for workstation A on VLAN123 (connected to SRX) to see Laptop B connected to the switch?
With this setup how do I accomplish this result: network A.A.A.A/24 will see network B.B.B.B/24 and vise versa?
Do I need to add an extra L3 device or since I have available extra ports on SRX and access to the switch that won't be needed?
My ISP is the same for both sides.
I looked in different places for my answer but I can't find it.

Thank you!