As we know, AEL and CLND have some similarities in business (Property management and construction industry). AEL is to be one of the main contractors for property development/construction of port city project, which is on the move now(or atleast heading the right direction). Port city project will surely benefit AEL. But how it's going to benefit CLND is the million dollar question.
Port city will be an eyeopener for FDIs (ah, now its financial city). They(foreigners) will be thinking Colombo again. There will be standard/listed office space, accommodation space prices for Financial city on reclaimed land. This will surely be a guide for Colombo Land prices.
Therefore, one expectation is for pouring FDIs with high demand for A grade office/accommodation/business space in Colombo and other expectation for standardized prices. Both will benefit the CLND's business model.
Here comes CITK to the equation. If anything is a positive for CLND, then its Christmas for CITK holders.
So AEL business value increase (based on Port city move), increases business value of CLND and thereby, CITK. Simple as that.