It dulled part of the atmosphere but not the energy on the pitch – although the sweat exposed by Eriksen became a laughing matter when he raced almost the length of his pitch only to fall over his own feet in sight of goal in the 20th minute.
Spurs continued to charge forward and swarmed relentlessly round the Palace defence.
Hennessey blocked a long-range shot from Kane in the 26th minute and the Wales international turned superhero once more by twice denying Eriksen’s follow-up attempts.
Spurs were aggressive but often sloppy in their approach play, as if they thought the job had already been done, and Pochettino looked angry and frustrated on the touchline.
They had won 20 of their 42 matches between the sides, losing only 13, and normal service was eventually resumed.
The home fans gave Andros Townsend a warm reception on his return to his boyhood club but their former player failed to produce his former magic.