Unity of Saivam and Vaishnavam Divyadesam

1 Thirukkalvanoor Divyadesam is inside Kanchi Kamakshi Amman temple and
http://www.divyadesam.com/hindu/temples/kanchipuram/tirukalvanoor-temple.shtml
2 Thirunilathingal thundan Divyadesam is inside Kanchi Ekambareswarar temple.
http://www.divyadesam.com/divya-desams/temples-01.shtml

These two temples are Saivism temple,by giving seva in these temples, the Perumal Sriman Narayanan explains the unity of Saivam and Vaishnavam.