This is not an easy question to answer in a short time as matters of concurrent delay are complex and the outcome very much turns on the particular facts,
In general, however, in the situation you outlines, the Contractor would be entitled to an extension of time (so he does not have to pay liquidated damages) but would not be entitled to payment of loss and expense.
You can look at the situation as follows: If the utility delays had not occurred, would the project complete on time? No, as the contractor suffered delays with its supply chain. Similarly, if the supply chain delays had not occurred, would the project have completed on time? No, because of the utility supply works.
On that basis, it is unfair for the the contractor to be charged liquidated damages (and therefore gets an extension of time), but similarly it would be unfair to pay loss and expense as those costs would have been incurred anyway, due to the delay caused by the supply chain issues.