DP83869HM: Connecting PHY DP83869HM to PHY of two different mac .do i need to use transformer between phy connections or can i connect directly (both are same phy)

Tool/software:

hii , I am using DP83869HM phy in my project . i want to make  connection between my FPGA  AGILEX-7 AND WIFI module. my both phys are sitting between mac and wifi module. I am using it in MII mode 100mbps ,So can i make a direct mdi connection between both PHY's or do i need to add transformer between both. If i can connect directly ,will it function properly or it is mandatory to add transformer. if mandatory then why ?(my both phy are in same voltage level )