Complex sentence: Hariclia Brecoulaki asserts that the Delos mosaics represent the single largest collection of Greek mosaics, and that only the Macedonian capital of Pella ranks as an equal in having private homes decorated with elaborate wall paintings, signed mosaics, and freestanding marble sculptures.
Split into simpler sentences: Hariclia Brecoulaki asserts that the Delos mosaics represent the single largest collection of Greek mosaics. She also states that only the Macedonian capital of Pella ranks as an equal in having private homes decorated with elaborate wall paintings, signed mosaics, and freestanding marble sculptures.