He notices, because with a clean, wet-haired Bruce Wayne in his apartment full of mistletoe, he is hyper aware of what Bruce is doing. But he generally trusts Bruce's calls, so he just lets it go. If it was important, Bruce would tell him. Instead, he goes to the 'fridge and starts pulling things out.

"How do omelettes and a citrus fruit salad sound?" he offers as he looks through.